British Tourists Told Not To Travel To Tunisia As Foreign Office Warns A 'Further Terrorist Attack Is Highly Likely'

British Tourists Really Shouldn't Travel To Tunisia, Warns Foreign Office
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The Foreign Office is advising British tourists not to travel to Tunisia, warning that a "further terrorist attack is highly likely".

The government department said that officials have been working closely with Tunisian authorities following last month's beach massacre in Sousse, which left 38 people dead - 30 of whom were British.

Brits already in the country have been urged to leave. The Foreign Office said that tour operators are arranging additional flights out of Tunisia.

The Foreign Office has been working with the local authorities to investigate the attack, which was carried out by 23-year-old student Seifeddine Rezgui, who targeted holidaymakers.

Foreign secretary, Philip Hammond, said that there has been no information relating to a "specific or imminent threat", but that the government believes another attack is very likely.

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Foreign secretary Philip Hammond said another terrorist attack in Tunisia is 'highly likely'

He said: "Since the attack in Sousse the intelligence and threat picture has developed considerably, leading us to the view that a further terrorist attack is highly likely."

The minister added: "We judge that more work is needed to effectively protect tourists from the terrorist threat. Taking all these factors together, we judge that it is right and prudent to make this change today.

"We have not taken this decision lightly, but our first priority will always be the safety of our citizens."

Article continues below slideshow:

GRAPHIC WARNING - Tunisia Terror Attack
Gunmen attack on Tunisian beach kills at least 39(01 of47)
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SOUSSE, TUNISIA - JUNE 28: Tourists pray after laying flowers on beach where 39 people were killed on Friday in a terrorist attack on June 28, 2015 in Souuse, Tunisia. At least 39 people were killed and 39 others were injured when a gunman opened fire on tourists at a popular Tunisian beach on Friday. Around 1,000 tourists returned to the UK with more set to follow in the coming days. (Photo by Stringer/Anadolu Agency/Getty Images) (credit:Anadolu Agency via Getty Images)
Gunmen attack on Tunisian beach kills at least 39(02 of47)
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SOUSSE, TUNISIA - JUNE 28: Tourists pray after laying flowers on beach where 39 people were killed on Friday in a terrorist attack on June 28, 2015 in Souuse, Tunisia. At least 39 people were killed and 39 others were injured when a gunman opened fire on tourists at a popular Tunisian beach on Friday. Around 1,000 tourists returned to the UK with more set to follow in the coming days. (Photo by Stringer/Anadolu Agency/Getty Images) (credit:Anadolu Agency via Getty Images)
Gunmen attack on Tunisian beach kills at least 39(03 of47)
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SOUSSE, TUNISIA - JUNE 28: A woman lays flowers on beach where 39 people were killed on Friday in a terrorist attack on June 28, 2015 in Souuse, Tunisia. At least 39 people were killed and 39 others were injured when a gunman opened fire on tourists at a popular Tunisian beach on Friday. Around 1,000 tourists returned to the UK with more set to follow in the coming days. (Photo by Stringer/Anadolu Agency/Getty Images) (credit:Anadolu Agency via Getty Images)
Gunmen attack on Tunisian beach kills at least 39(04 of47)
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SOUSSE, TUNISIA - JUNE 28: A woman view flowers left on beach where 39 people were killed on Friday in a terrorist attack on June 28, 2015 in Souuse, Tunisia. At least 39 people were killed and 39 others were injured when a gunman opened fire on tourists at a popular Tunisian beach on Friday. Around 1,000 tourists returned to the UK with more set to follow in the coming days. (Photo by Stringer/Anadolu Agency/Getty Images) (credit:Anadolu Agency via Getty Images)
Gunmen attack on Tunisian beach kills at least 39(05 of47)
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SOUSSE, TUNISIA - JUNE 28: Tourist wiev flowers left on beach where 39 people were killed on Friday in a terrorist attack on June 28, 2015 in Souuse, Tunisia. At least 39 people were killed and 39 others were injured when a gunman opened fire on tourists at a popular Tunisian beach on Friday. Around 1,000 tourists returned to the UK with more set to follow in the coming days. (Photo by Stringer/Anadolu Agency/Getty Images) (credit:Anadolu Agency via Getty Images)
Gunmen attack on Tunisian beach kills at least 39(06 of47)
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SOUSSE, TUNISIA - JUNE 28: Tourists view flowers left on beach where 39 people were killed on Friday in a terrorist attack on June 28, 2015 in Souuse, Tunisia. At least 39 people were killed and 39 others were injured when a gunman opened fire on tourists at a popular Tunisian beach on Friday. Around 1,000 tourists returned to the UK with more set to follow in the coming days. (Photo by Stringer/Anadolu Agency/Getty Images) (credit:Anadolu Agency via Getty Images)
TUNISIA-UNREST-TOURISM(07 of47)
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A family arrives to lay flowers at the site of a shooting attack on the beach in front of the Riu Imperial Marhaba Hotel in Port el Kantaoui, on the outskirts of Sousse south of the capital Tunis, on June 28, 2015. The Islamic State (IS) group claimed responsibility on June 27 for the massacre in the seaside resort that killed nearly 40 people, most of them British tourists, in the worst attack in the country's recent history. AFP PHOTO / KENZO TRIBOUILLARD (Photo credit should read KENZO TRIBOUILLARD/AFP/Getty Images) (credit:KENZO TRIBOUILLARD via Getty Images)
TUNISIA-UNREST-TOURISM(08 of47)
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Tourists mourn at the site of a shooting attack on the beach in front of the Riu Imperial Marhaba Hotel in Port el Kantaoui, on the outskirts of Sousse south of the capital Tunis, on June 28, 2015. The Islamic State (IS) group claimed responsibility on June 27 for the massacre in the seaside resort that killed nearly 40 people, most of them British tourists, in the worst attack in the country's recent history. AFP PHOTO / KENZO TRIBOUILLARD (Photo credit should read KENZO TRIBOUILLARD/AFP/Getty Images) (credit:KENZO TRIBOUILLARD via Getty Images)
TUNISIA-UNREST-TOURISM(09 of47)
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Tourists and journalists take pictures of flowers placed at the site of a shooting attack on the beach in front of the Riu Imperial Marhaba Hotel in Port el Kantaoui, on the outskirts of Sousse south of the capital Tunis, on June 28, 2015. The Islamic State (IS) group claimed responsibility on June 27 for the massacre in the seaside resort that killed nearly 40 people, most of them British tourists, in the worst attack in the country's recent history. AFP PHOTO / KENZO TRIBOUILLARD (Photo credit should read KENZO TRIBOUILLARD/AFP/Getty Images) (credit:KENZO TRIBOUILLARD via Getty Images)
Terrorist Attacks On Tunis Beach Resort Kills At Least 27 Tourists(10 of47)
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SOUSSE, TUNISIA - JUNE 28: Flowers and tributes are left at Marhaba beach near to where 38 people were killed on Friday in a terrorist attack on June 28, 2015 in Souuse, Tunisia. Sousse beaches remain quiet following the Tunisia beach attack which left 38 dead, including at least 15 Britons while numerous tourists returned to the UK with more set to follow in the coming days. (Photo by Jeff J Mitchell/Getty Images) (credit:Jeff J Mitchell via Getty Images)
Terrorist Attacks On Tunis Beach Resort Kills At Least 27 Tourists(11 of47)
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SOUSSE, TUNISIA - JUNE 28: A candle and flowers are left at Marhaba beach near to where 38 people were killed on Friday in a terrorist attack on June 28, 2015 in Souuse, Tunisia. Sousse beaches remain quiet following the Tunisia beach attack which left 38 dead, including at least 15 Britons while numerous tourists returned to the UK with more set to follow in the coming days. (Photo by Jeff J Mitchell/Getty Images) (credit:Jeff J Mitchell via Getty Images)
Terrorist Attacks On Tunis Beach Resort Kills At Least 27 Tourists(12 of47)
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SOUSSE, TUNISIA - JUNE 28: Flowers and tributes are left at Marhaba beach near to where 38 people were killed on Friday in a terrorist attack on June 28, 2015 in Souuse, Tunisia. Sousse beaches remain quiet following the Tunisia beach attack which left 38 dead, including at least 15 Britons while numerous tourists returned to the UK with more set to follow in the coming days. (Photo by Jeff J Mitchell/Getty Images) (credit:Jeff J Mitchell via Getty Images)
Terrorist Attacks On Tunis Beach Resort Kills At Least 27 Tourists(13 of47)
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SOUSSE, TUNISIA - JUNE 28: A candle and flowers are left at Marhaba beach near to where 38 people were killed on Friday in a terrorist attack on June 28, 2015 in Souuse, Tunisia. Sousse beaches remain quiet following the Tunisia beach attack which left 38 dead, including at least 15 Britons while numerous tourists returned to the UK with more set to follow in the coming days. (Photo by Jeff J Mitchell/Getty Images) (credit:Jeff J Mitchell via Getty Images)
People commemorate the victims of gunmen attack in Tunisia(14 of47)
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SOUSSE, TUNISIA - JUNE 28: People gather to lay flowers on beach where 39 people were killed on 26th of June 2015, in a terrorist attack in Souuse, Tunisia on June 28, 2015. At least 39 people were killed and 39 others were injured when a gunman opened fire on tourists at a popular Tunisian beach on Friday. Around 1,000 tourists returned to the UK with more set to follow in the coming days. (Photo by Yassine Gaidi/Anadolu Agency/Getty Images) (credit:Anadolu Agency via Getty Images)
Terrorist Attacks On Tunis Beach Resort Kills At Least 27 Tourists(15 of47)
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SOUSSE, TUNISIA - JUNE 28: Flowers and tributes are left at Marhaba beach near to where 38 people were killed on Friday in a terrorist attack on June 28, 2015 in Souuse, Tunisia. Sousse beaches remain quiet following the Tunisia beach attack which left 38 dead, including at least 15 Britons while numerous tourists returned to the UK with more set to follow in the coming days. (Photo by Jeff J Mitchell/Getty Images) (credit:Jeff J Mitchell via Getty Images)
People commemorate the victims of gunmen attack in Tunisia(16 of47)
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SOUSSE, TUNISIA - JUNE 28: People gather to lay flowers on beach where 39 people were killed on 26th of June 2015, in a terrorist attack in Souuse, Tunisia on June 28, 2015. At least 39 people were killed and 39 others were injured when a gunman opened fire on tourists at a popular Tunisian beach on Friday. Around 1,000 tourists returned to the UK with more set to follow in the coming days. (Photo by Yassine Gaidi/Anadolu Agency/Getty Images) (credit:Anadolu Agency via Getty Images)
People commemorate the victims of gunmen attack in Tunisia(17 of47)
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SOUSSE, TUNISIA - JUNE 28: People gather to lay flowers on beach where 39 people were killed on 26th of June 2015, in a terrorist attack in Souuse, Tunisia on June 28, 2015. At least 39 people were killed and 39 others were injured when a gunman opened fire on tourists at a popular Tunisian beach on Friday. Around 1,000 tourists returned to the UK with more set to follow in the coming days. (Photo by Yassine Gaidi/Anadolu Agency/Getty Images) (credit:Anadolu Agency via Getty Images)
People commemorate the victims of gunmen attack in Tunisia(18 of47)
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SOUSSE, TUNISIA - JUNE 28: A man prays after laying flowers on beach where 39 people were killed on Friday in a terrorist attack on June 28, 2015 in Souuse, Tunisia. At least 39 people were killed and 39 others were injured when a gunman opened fire on tourists at a popular Tunisian beach on Friday. Around 1,000 tourists returned to the UK with more set to follow in the coming days. (Stringer - Anadolu Agency) (Photo by Yassine Gaidi/Anadolu Agency/Getty Images) (credit:Anadolu Agency via Getty Images)
People commemorate the victims of gunmen attack in Tunisia(19 of47)
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SOUSSE, TUNISIA - JUNE 28: People gather to lay flowers on beach where 39 people were killed on 26th of June 2015, in a terrorist attack in Souuse, Tunisia on June 28, 2015. At least 39 people were killed and 39 others were injured when a gunman opened fire on tourists at a popular Tunisian beach on Friday. Around 1,000 tourists returned to the UK with more set to follow in the coming days. (Photo by Yassine Gaidi/Anadolu Agency/Getty Images) (credit:Anadolu Agency via Getty Images)
People commemorate the victims of gunmen attack in Tunisia(20 of47)
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SOUSSE, TUNISIA - JUNE 28: A girl cries as the people gather to lay flowers on beach where 39 people were killed on 26th of June 2015, in a terrorist attack in Souuse, Tunisia on June 28, 2015. At least 39 people were killed and 39 others were injured when a gunman opened fire on tourists at a popular Tunisian beach on Friday. Around 1,000 tourists returned to the UK with more set to follow in the coming days. (Photo by Yassine Gaidi/Anadolu Agency/Getty Images) (credit:Anadolu Agency via Getty Images)
People commemorate the victims of gunmen attack in Tunisia(21 of47)
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SOUSSE, TUNISIA - JUNE 28: Flowers and notes are seen, laid by mourners on the beach where 39 people were killed on 26th of June 2015, in a terrorist attack in Souuse, Tunisia on June 28, 2015. At least 39 people were killed and 39 others were injured when a gunman opened fire on tourists at a popular Tunisian beach on Friday. Around 1,000 tourists returned to the UK with more set to follow in the coming days. (Photo by Yassine Gaidi/Anadolu Agency/Getty Images) (credit:Anadolu Agency via Getty Images)
People commemorate the victims of gunmen attack in Tunisia(22 of47)
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SOUSSE, TUNISIA - JUNE 28: People gather to lay flowers on beach where 39 people were killed on 26th of June 2015, in a terrorist attack in Souuse, Tunisia on June 28, 2015. At least 39 people were killed and 39 others were injured when a gunman opened fire on tourists at a popular Tunisian beach on Friday. Around 1,000 tourists returned to the UK with more set to follow in the coming days. (Photo by Yassine Gaidi/Anadolu Agency/Getty Images) (credit:Anadolu Agency via Getty Images)
People commemorate the victims of gunmen attack in Tunisia(23 of47)
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SOUSSE, TUNISIA - JUNE 28: A woman lays Tunisia flag as the people gather to lay flowers on beach where 39 people were killed on 26th of June 2015, in a terrorist attack in Souuse, Tunisia on June 28, 2015. At least 39 people were killed and 39 others were injured when a gunman opened fire on tourists at a popular Tunisian beach on Friday. Around 1,000 tourists returned to the UK with more set to follow in the coming days. (Photo by Yassine Gaidi/Anadolu Agency/Getty Images) (credit:Anadolu Agency via Getty Images)
People commemorate the victims of gunmen attack in Tunisia(24 of47)
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SOUSSE, TUNISIA - JUNE 28: People gather to lay flowers on beach where 39 people were killed on 26th of June 2015, in a terrorist attack in Souuse, Tunisia on June 28, 2015. At least 39 people were killed and 39 others were injured when a gunman opened fire on tourists at a popular Tunisian beach on Friday. Around 1,000 tourists returned to the UK with more set to follow in the coming days. (Photo by Yassine Gaidi/Anadolu Agency/Getty Images) (credit:Anadolu Agency via Getty Images)
People commemorate the victims of gunmen attack in Tunisia(25 of47)
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SOUSSE, TUNISIA - JUNE 28: People gather to lay flowers on beach where 39 people were killed on 26th of June 2015, in a terrorist attack in Souuse, Tunisia on June 28, 2015. At least 39 people were killed and 39 others were injured when a gunman opened fire on tourists at a popular Tunisian beach on Friday. Around 1,000 tourists returned to the UK with more set to follow in the coming days. (Photo by Yassine Gaidi/Anadolu Agency/Getty Images) (credit:Anadolu Agency via Getty Images)
People commemorate the victims of gunmen attack in Tunisia(26 of47)
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SOUSSE, TUNISIA - JUNE 28: People gather to lay flowers on beach where 39 people were killed on 26th of June 2015, in a terrorist attack in Souuse, Tunisia on June 28, 2015. At least 39 people were killed and 39 others were injured when a gunman opened fire on tourists at a popular Tunisian beach on Friday. Around 1,000 tourists returned to the UK with more set to follow in the coming days. (Photo by Yassine Gaidi/Anadolu Agency/Getty Images) (credit:Anadolu Agency via Getty Images)
People commemorate the victims of gunmen attack in Tunisia(27 of47)
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SOUSSE, TUNISIA - JUNE 28: People gather to lay flowers on beach where 39 people were killed on 26th of June 2015, in a terrorist attack in Souuse, Tunisia on June 28, 2015. At least 39 people were killed and 39 others were injured when a gunman opened fire on tourists at a popular Tunisian beach on Friday. Around 1,000 tourists returned to the UK with more set to follow in the coming days. (Photo by Yassine Gaidi/Anadolu Agency/Getty Images) (credit:Anadolu Agency via Getty Images)
Gunmen attack on Tunisian beach kills at least 39(28 of47)
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SOUSSE, TUNISIA - JUNE 28: Tourists view flowers left on beach where 39 people were killed on Friday in a terrorist attack on June 28, 2015 in Souuse, Tunisia. At least 39 people were killed and 39 others were injured when a gunman opened fire on tourists at a popular Tunisian beach on Friday. Around 1,000 tourists returned to the UK with more set to follow in the coming days. (Photo by Stringer/Anadolu Agency/Getty Images) (credit:Anadolu Agency via Getty Images)
People commemorate the victims of gunmen attack in Tunisia(29 of47)
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SOUSSE, TUNISIA - JUNE 28: People gather to lay flowers on beach where 39 people were killed on 26th of June 2015, in a terrorist attack in Souuse, Tunisia on June 28, 2015. At least 39 people were killed and 39 others were injured when a gunman opened fire on tourists at a popular Tunisian beach on Friday. Around 1,000 tourists returned to the UK with more set to follow in the coming days. (Photo by Yassine Gaidi/Anadolu Agency/Getty Images) (credit:Anadolu Agency via Getty Images)
Graphic Warning(30 of47)
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TUNISIA-UNREST-TOURISM(31 of47)
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Tourists react in the Imperial hotel at the resort town of Sousse, a popular tourist destination 140 kilometres (90 miles) south of the Tunisian capital, on June 26, 2015. At least 27 people, including foreigners, were killed in a mass shooting at a Tunisian beach resort packed with holidaymakers, in the North African country's worst attack in recent history. AFP PHOTO / FETHI BELAID (Photo credit should read FETHI BELAID/AFP/Getty Images) (credit:FETHI BELAID via Getty Images)
TUNISIA-UNREST-TOURISM(32 of47)
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Tourists react in the Imperial hotel at the resort town of Sousse, a popular tourist destination 140 kilometres (90 miles) south of the Tunisian capital, on June 26, 2015. At least 27 people, including foreigners, were killed in a mass shooting at a Tunisian beach resort packed with holidaymakers, in the North African country's worst attack in recent history. Editor's note: spot in the middle is a watermark on the lens. AFP PHOTO / FETHI BELAID (Photo credit should read FETHI BELAID/AFP/Getty Images) (credit:FETHI BELAID via Getty Images)
Tunisia hotel attack(33 of47)
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SOUSSE, TUNISIA - JUNE 26: Dead bodies are seen after an armed attack on a tourist hotel in Sousse, east Tunisia, left at least 27 people dead, including foreigners, and injured six others , on June 26, 2015. (Photo by Med Amine Ben Aziza/Anadolu Agency/Getty Images) (credit:Anadolu Agency via Getty Images)
TUNISIA-UNREST-TOURISM(34 of47)
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A Tunisian medic stands next to the body of a tourist at the Imperial hotel in the resort town of Sousse, a popular tourist destination 140 kilometres (90 miles) south of the Tunisian capital, on June 26, 2015. At least 27 people, including foreigners, were killed in a mass shooting at a Tunisian beach resort packed with holidaymakers, in the North African country's worst attack in recent history. Editor's note: spot in the middle is a watermark on the lens. AFP PHOTO / FETHI BELAID (Photo credit should read FETHI BELAID/AFP/Getty Images) (credit:FETHI BELAID via Getty Images)
TUNISIA-UNREST-TOURISM(35 of47)
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A general view shows a swimming pool at the Thalasso & Spa hotel in the resort town of Sousse, a popular tourist destination 140 kilometres (90 miles) south of the Tunisian capital, on June 26, 2015, following a shooting attack. At least 27 people, including foreigners, were killed in a mass shooting at a Tunisian beach resort packed with holidaymakers, in the North African country's worst attack in recent history. AFP PHOTO / FETHI BELAID (Photo credit should read FETHI BELAID/AFP/Getty Images) (credit:FETHI BELAID via Getty Images)
TUNISIA-UNREST-TOURISM(36 of47)
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A body is seen covered in shroud at the resort town of Sousse, a popular tourist destination 140 kilometres (90 miles) south of the Tunisian capital, on June 26, 2015, following a shooting attack. At least 27 people, including foreigners, were killed in a mass shooting at a Tunisian beach resort packed with holidaymakers, in the North African country's worst attack in recent history. AFP PHOTO / FETHI BELAID (Photo credit should read FETHI BELAID/AFP/Getty Images) (credit:FETHI BELAID via Getty Images)
TUNISIA-UNREST-TOURISM(37 of47)
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Tunisian security forces evacuate people from the Imperial hotel in the resort town of Sousse, a popular tourist destination 140 kilometres (90 miles) south of the Tunisian capital, on June 26, 2015, following a shooting attack. At least 27 people, including foreigners, were killed in a mass shooting at a Tunisian beach resort packed with holidaymakers, in the North African country's worst attack in recent history. AFP PHOTO / FETHI BELAID (Photo credit should read FETHI BELAID/AFP/Getty Images) (credit:FETHI BELAID via Getty Images)
TUNISIA-UNREST-TOURISM(38 of47)
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Tunisian medics stand next to the bodies of tourists in the resort town of Sousse, a popular tourist destination 140 kilometres (90 miles) south of the Tunisian capital, on June 26, 2015. At least 27 people, including foreigners, were killed in a mass shooting at a Tunisian beach resort packed with holidaymakers, in the North African country's worst attack in recent history. AFP PHOTO / FETHI BELAID (Photo credit should read FETHI BELAID/AFP/Getty Images) (credit:FETHI BELAID via Getty Images)
Tunisia Attack(39 of47)
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In this screen grab taken from video provided by Tunisia TV1, injured people are treated on a Tunisian beach Friday June 26, 2015. Two gunmen rushed from the beach into a hotel in the Tunisian resort town of Sousse Friday, killing at least 27 people and wounding six others in the latest attack on the North African country's key tourism industry, the Interior Ministry said. (Tunisia TV1 via AP) MANDATORY CREDIT (credit:ap)
Tunisia Attack(40 of47)
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In this screen grab taken from video provided by Tunisia TV1, injured people are treated on a Tunisian beach Friday June 26, 2015. Two gunmen rushed from the beach into a hotel in the Tunisian resort town of Sousse Friday, killing at least 27 people and wounding six others in the latest attack on the North African country's key tourism industry, the Interior Ministry said. (Tunisia TV1 via AP) MANDATORY CREDIT (credit:ap)
Tunisia Attack(41 of47)
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In this screen grab taken from video provided by Tunisia TV1, injured people are treated on a Tunisian beach Friday June 26, 2015. Two gunmen rushed from the beach into a hotel in the Tunisian resort town of Sousse Friday, killing at least 27 people and wounding six others in the latest attack on the North African country's key tourism industry, the Interior Ministry said. (Tunisia TV1 via AP) MANDATORY CREDIT (credit:ap)
Tunisia Attack(42 of47)
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In this screen grab taken from video provided by Tunisia TV1, injured people are treated on a Tunisian beach Friday June 26, 2015. Two gunmen rushed from the beach into a hotel in the Tunisian resort town of Sousse Friday, killing at least 27 people and wounding six others in the latest attack on the North African country's key tourism industry, the Interior Ministry said. (Tunisia TV1 via AP MANDATORY CREDIT (credit:ap)
Attack on hotel in eastern city of Sousse(43 of47)
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SOUSSE, TUNISIA - JUNE 26: Wounded people are carried after an armed attack on a tourist hotel in Sousse, east Tunisia, left at least 27 people dead, including foreigners, and injured six others , on June 26, 2015. (Photo by Stringer/Anadolu Agency/Getty Images) (credit:Anadolu Agency via Getty Images)
Attack on hotel in eastern city of Sousse(44 of47)
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SOUSSE, TUNISIA - JUNE 26: Security measures are taken after an armed attack on a tourist hotel in Sousse, east Tunisia, left at least 27 people dead, including foreigners, and injured six others , on June 26, 2015. (Photo by Stringer/Anadolu Agency/Getty Images) (credit:Anadolu Agency via Getty Images)
Attack on hotel in eastern city of Sousse(45 of47)
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SOUSSE, TUNISIA - JUNE 26: A suspect man is arrested after an armed attack on a tourist hotel in Sousse, east Tunisia, left at least 27 people dead, including foreigners, and injured six others , on June 26, 2015. (Photo by Med Amine Ben Aziza /Anadolu Agency/Getty Images) (credit:Anadolu Agency via Getty Images)
BRITAIN-TUNISIA-UNREST-TOURISM(46 of47)
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Britain's Union flag flies at half-mast above the Foreign and Commonwealth Office (FCO) in central London, on June 28, 2015, in memory of those killed after the mass shooting in Tunisia on Friday that left 38 people dead including at least 15 Britons. The British government cautioned Sunday that other attacks 'are possible' in Tunisia after the mass shooting two days ago that left 38 people dead including at least 15 Britons. AFP PHOTO / NIKLAS HALLE'N (Photo credit should read NIKLAS HALLE'N/AFP/Getty Images) (credit:NIKLAS HALLE'N via Getty Images)
Attack on hotel in eastern city of Sousse(47 of47)
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SOUSSE, TUNISIA - JUNE 26: The bodies of people are seen after an armed attack on a tourist hotel in Sousse, east Tunisia, left at least 27 people dead, including foreigners, and injured six others , on June 26, 2015. (Photo by Stringer/Anadolu Agency/Getty Images) (credit:Anadolu Agency via Getty Images)

The Foreign Office's new travel advice states: "Since the attack in Sousse, we have been working closely with the Tunisian authorities to investigate the attack and the wider threat from terrorist groups in Tunisia.

"Although we have had good co-operation from the Tunisian government, including putting in place additional security measures, the intelligence and threat picture has developed considerably, reinforcing our view that a further terrorist attack is highly likely.

"On balance, we do not believe the mitigation measures in place provide adequate protection for British tourists in Tunisia at the present time and we have therefore changed our travel advice accordingly."

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Foreign Office map warns Brits against travel to Tunisia

The new advice contradicts that given by the Prime Minister just last week that Brits should not abandon their holidays to Tunisia.

Addressing the House of Commons last Monday, David Cameron said that the country should "not give up our way of life" and "cower in the face of terrorism".

Despite Cameron's speech, Ukip leader Nigel Farage reconsidered his trip to Kenya in the wake of the beach atrocity, saying it was "just not safe".

Tunisia declared a state of emergency after the attack.

On Wednesday the Tunisian Prime Minister said that further attacks are likely.

The Foreign Office said that the Tunisian authorities have increased their security measures, "but have also acknowledged the limitations in their ability to counter the current terrorist threat".

Travel firms have begun cancelling flights to the North African country.

Thomson and First Choice immediately cancelled all outbound flights to Tunisia for the summer season running up to and including October 31.

A spokesman said: "Thomas Cook is strongly advising its guests in the country to return on these flights. We are also sending our specialist assistance teams to Tunisia to offer customers additional support in resort.

"We are committed to doing everything we can to support our guests in Tunisia at this time and will work to bring them back to the UK safely and as soon as possible."

Between 2,500 and 3,000 British tourists are believed to be in Tunisia and about 300 independent travellers.