Security and defence chiefs will discuss increasing UK support for the French-led military operation in Mali after David Cameron vowed to show "iron resolve" in tackling Islamist terrorism in the aftermath of the deadly Algerian siege.

The Prime Minister will chair a meeting of the National Security Council to consider what additional surveillance and transport help can be provided to the assault on rebels in the neighbouring country on top of two RAF C17 transport aircraft despatched last week.

Britain was "not seeking a combat role", he insisted yesterday, but The Times reported that units from all three forces had been placed on "high readiness" to deploy.

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A French soldier secures a perimeter on the outskirts of Diabaly, Mali

The stepping up of involvement was under review the day after the PM heralded what he said was a global "generational struggle" against al Qaida-inspired Islamist terrorism in North Africa.

He pledged to provide intelligence and counter-terrorism assets to help track down and dismantle the terror network responsible for last week's attack on an Algerian natural gas plant.

Six Britons are thought to be among 37 foreign workers who died at the remote desert facility at In Amenas - part-operated by BP - which was overrun by heavily-armed terrorists.

Some 29 of the hostage-takers died, while three were captured by Algerian troops during a special forces mission to end the four-day stand off.

Three of the Britons killed have been named as 46-year-old security expert Paul Morgan, systems supervisor Garry Barlow, 49, from Liverpool, and 59-year-old planning manager Kenneth Whiteside, from Glenrothes, Fife.

Colombian BP executive Carlos Estrada, who lived in London, is also believed to have died.

Forensic experts from the UK, US and Norway are working with the Algerian authorities to formally identify a number of bodies found at the site, thought to include the three further Britons.

Cameron cautioned that task could take "some time".

On Mali, he also confirmed, Britain will provide troops to an EU mission to train the Malian military to take on Islamist militants who have taken over the north of the country.

The mission, due to deploy in February or March, is expected to include around 250 trainers and 250 force protection troops and Cameron said that the British contribution would number "in the tens, not the hundreds", with aides saying it would be at the lower end of that range.

The Times reported that Army, Navy and RAF personnel had been readied for possible involvement in the French operation and that military chiefs had been given until the end of the week to draw up contingency plans for African operations - including training - codenamed Operation Newcombe.

An MoD spokesperson said: "The MoD is supporting French efforts through logistical support. Ministers will continue to review the situation and any requirement for further support.

"However, planning does not include British personnel in a ground combat role."

The Prime Minister defended deep cuts in the armed forces - with details of where the latest tranche of cuts may fall being outlined by forces chiefs today.

Medics could be among around 5,000 voluntary and compulsory redundancies this time, the Daily Telegraph reported, as part of the effort to slash total numbers by around 40,000 to 82,000.

The MoD said it was retaining an exemption for troops preparing to serve in Afghanistan.

As the families of the identified victims of the Algeria bloodbath paid tribute to their loved ones, some criticised the British authorities for failing to keep them informed.

Mr Whiteside's brother Bob said his family first learnt of his death on social media website Facebook, and were only later told by police that he had been "executed".

And the family of survivor Allen McCloud, 53, from Plymouth, said the standard of information provided by the British authorities, fuel company BP and recruitment company Orion was "very poor".

A Foreign Office spokesman said the welfare of British nationals had been its top priority throughout and that it tried to provide as much support and information to relatives as possible.

A poll for ITV found 41% thought the UK should play no part at all in the French-led operation, against 25% who said it should.

Fewer than one in five (18%) thought British troops should be deployed on the ground in Mali, against 47% who disagreed.

  • ComRes interviewed 2,013 British adults for ITV News from January 18 to 20.
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  • French Gazelle military helicopters, flying back from the city of Timbuktu, arrive at the French army base camp airport on January 28, 2013 in Sevare. (FRED DUFOUR/AFP/Getty Images)

  • This picture provided by the French Army Communications Audiovisual office (ECPAD) and released Monday Jan. 28, 2013 shows Chadian soldiers securing Gao airport, north of Mali, Saturday, Jan. 26, 2013. (AP Photo/Ghislain Mariette, EMA-ECPAD)

  • This picture provided by the French Army Communications Audiovisual office (ECPAD) and released Monday Jan. 28, 2013 shows a Chadian soldier securing Gao airport, north of Mali, Saturday, Jan. 26, 2013. (AP Photo/Ghislain Mariette, EMA-ECPAD)

  • This picture provided by the French Army Communications Audiovisual office (ECPAD) and released Monday Jan. 28, 2013 shows a Chadian soldier securing Gao airport, north of Mali, Saturday, Jan. 26, 2013. (AP Photo/Ghislain Mariette, EMA-ECPAD)

  • This picture provided by the French Army Communications Audiovisual office (ECPAD) and released Monday Jan. 28, 2013 shows a Chadian soldier securing Gao airport, north of Mali, Saturday, Jan. 26, 2013. (AP Photo/Ghislain Mariette, EMA-ECPAD)

  • This picture provided by the French Army Communications Audiovisual office (ECPAD) and released Monday Jan. 28, 2013 shows Malians soldiers arriving at Gao airport, north of Mali, Saturday, Jan. 26, 2013. (AP Photo/Ghislain Mariette, EMA-ECPAD)

  • This picture provided by the French Army Communications Audiovisual office (ECPAD) and released Monday Jan. 28, 2013 shows Malian soldiers boarding a French Transall military plane in Bamako, Mali, Saturday Jan. 26, 2013. (AP Photo/Ghislain Mariette, EMA-ECPAD)

  • This picture provided by the French Army Communications Audiovisual office (ECPAD) and released Monday Jan. 28, 2013 shows Malian soldiers boarding a French Transall military plane in Bamako, Mali, Saturday Jan. 26, 2013. (AP Photo/Ghislain Mariette, EMA-ECPAD)

  • French Gazelle military helicopters, flying back from the city of Timbuktu, arrive at the French army base camp airport on January 28, 2013 in Sevare. (FRED DUFOUR/AFP/Getty Images)

  • A French Gazelle military helicopter, flying back from the city of Timbuktu, arrives at the French army base camp airport on January 28, 2013 in Sevare. (FRED DUFOUR/AFP/Getty Images)

  • A French Gazelle military helicopter, flying back from the city of Timbuktu, arrives at the French army base camp airport on January 28, 2013 in Sevare. (FRED DUFOUR/AFP/Getty Images)

  • A French Gazelle military helicopter, flying back from the city of Timbuktu, arrives at the French army base camp airport on January 28, 2013 in Sevare. (FRED DUFOUR/AFP/Getty Images)

  • A Malian soldier stands at a checkpoint near Sevare on January 27, 2013. (FRED DUFOUR/AFP/Getty Images)

  • A Malian soldier stands at a checkpoint near Sevare on January 27, 2013. (FRED DUFOUR/AFP/Getty Images)

  • Malian soldiers wait at a checkpoint near Sevare on January 27, 2013. (FRED DUFOUR/AFP/Getty Images)

  • Malian soldiers wait at a checkpoint near Sevare on January 27, 2013. (FRED DUFOUR/AFP/Getty Images)

  • French soldiers are waiting the arrival of the French Defence Minister before their departure to Mali on January 25, 2013 at the Miramas ZRA (Zone de Regroupement et d'Attente) military base, southern France, as part of the French military operation codenamed Serval.(GERARD JULIEN/AFP/Getty Images)

  • A Bin Laden sticker adorns the tank of a small motorcycle in Mopti, some 630 kms (400 miles) north of Mali's capital Bamako Thursday, Jan. 24, 2013. (AP Photo/Jerome Delay)

  • French soldiers return from patrol in Sevare, some 620 kms (400 miles) north of Mali's capital Bamako Thursday, Jan. 24, 2013. (AP Photo/Jerome Delay)

  • A U.S. Air Force transport aircraft with French military personnel and equipment aboard takes off for Mali from Istres airbase, near Marseille, southern France, Thursday, Jan. 24, 2013. (AP Photo/Claude Paris)

  • A French soldier stands guard as he arrives in the city of Diabaly, on January 21, 2013. (ISSOUF SANOGO/AFP/Getty Images)

  • A French soldier deployed near city of Diabaly keeps post from a machine gun mounted vehicle on January 22, 2013. (SANOGO/AFP/Getty Images)

  • Residents look at an abandoned Malian army tank in Diabaly on January 22, 2013. (ISSOUF SANOGO/AFP/Getty Images)

  • Malians walk past a burnt pickup truck mounted with a machine gun, which was formerly used by Islamists and destroyed after air strikes by the French air force a week ago, at a Malian military base which had been temporarily captured by Islamists, in Diabaly, on January 22, 2013. (ISSOUF SANOGO/AFP/Getty Images)

  • A French soldier deployed in Diabaly patrol on January 22, 2013. (ISSOUF SANOGO/AFP/Getty Images)

  • A man and woman on a scooter ride past a Malian soldier controlling a strategic bridge on the Niger river on January 22, 2013 near Markala, 270km North of Bamako. (ERIC FEFERBERG/AFP/Getty Images)

  • A French soldier stands next to a military truck near Malian army buildings which were taken by Islamic jihadists before being destroyed during aerial bombings, in the city of Diabaly, on January 21, 2013. (ISSOUF SANOGO/AFP/Getty Images)

  • French soldiers arrive in the city of Diabaly, on January 21, 2013. (ISSOUF SANOGO/AFP/Getty Images)

  • French soldiers arrive in the Malian town of Diabaly on January 21, 2013. (ISSOUF SANOGO/AFP/Getty Images)

  • A French Legionaire stands guard as groups from various units of the Air Force, Ground Army (Armee de Terre) and the French Foreign Legion fly out for a military operation in the north of Mali on January 21, 2013. (FABIO BUCCIARELLI/AFP/Getty Images)

  • A foreign press photographer shoots pictures of a man holding a French flg on a street of Bamako on January 17, 2013. (FRED DUFOUR/AFP/Getty Images)

  • A picture taken with a mobile phone on January 12, 2013 reportedly shows Islamist insurgents in Gao. (STRINGER/AFP/Getty Images)

  • A Malian man sells flags, including French ones, on a street of Bamako on January 17, 2013. (FRED DUFOUR/AFP/Getty Images)

  • A Malian man sells souvenirs, including French ones, on a street of Bamako on January 17, 2013. (FRED DUFOUR/AFP/Getty Images)

  • French helicopters are towed to the military side of Bamako's airport Wednesday Jan. 16, 2013, during a joined visit to French and Malian troops by Mali's President Dioncounda Traore and French Ambassador to Mali Christian Rouyer. (AP Photo/Jerome Delay)

  • Mali National Guard soldiers stand guard on the military side of Bamako's airport Wednesday Jan. 16, 2013, as a commercial jet takes off during a joined visit to French and Malian troops by Mali's President Dioncounda Traore and French Ambassador to Mali Christian Rouyer. (AP Photo/Jerome Delay)

  • Mali's President Dioncounda Traore, center, visits the troops on the military side of Bamako's airport, Wednesday Jan. 16, 2013. (AP Photo/Jerome Delay)

  • Mali army cadets secure a perimeter on the military side of Bamako's airport Wednesday Jan. 16, 2013, during a joined visit to French and Malian troops by Mali's President Dioncounda Traore and French Ambassador to Mali Christian Rouyer. (AP Photo/Jerome Delay)

  • Mali National Guard soldiers stand guard on the military side of Bamako's airport Wednesday Jan. 16, 2013, during a joined visit to French and Malian troops by Mali's President Dioncounda Traore and French Ambassador to Mali Christian Rouyer. (AP Photo/Jerome Delay)

  • A Mali National Guard soldier stands guard on the military side of Bamako's airport Wednesday Jan. 16, 2013, during a joined visit to French and Malian troops by Mali's President Dioncounda Traore and French Ambassador to Mali Christian Rouyer. (AP Photo/Jerome Delay)

  • A Mali gendarme directs traffic on the military side of Bamako's airport Wednesday Jan. 16, 2013, during a joined visit to French and Malian troops by Mali's President Dioncounda Traore and French Ambassador to Mali Christian Rouyer. (AP Photo/Jerome Delay)

  • A Malian soldier stands guard on the military side of Bamako's airport Wednesday Jan. 16, 2013, during a joined visit to French and Malian troops by Mali's President Dioncounda Traore and French Ambassador to Mali Christian Rouyer. (AP Photo/Jerome Delay)

  • Mali National Guard soldiers stand guard on the military side of Bamako's airport Wednesday Jan. 16, 2013, during a joined visit to French and Malian troops by Mali's President Dioncounda Traore and French Ambassador to Mali Christian Rouyer. (AP Photo/Jerome Delay)

  • This night vision photo provided by the ECPAD/French Army shows French military armored vehicles on Bamako airport, Tuesday, Jan.15, 2013. (AP Photo/Jeremy Lempin, ECPAD, EMA)

  • This photo provided by the ECPAD/French Army shows a Rafale jetfighter flying over Mali, Tuesday, Jan.15, 2013. (AP Photo/Adj Nicolas-Nelson Richard, ECPAD, EMA)

  • This photo provided by the ECPAD/French Army shows French soldiers carrying ammunition at Bamako airport, Tuesday, Jan.15, 2013. (AP Photo/Jeremy Lempin, ECPAD, EMA)

  • This photo provided by the ECPAD/French Army shows a Rafale jet fighter refueling over Mali, Tuesday, Jan. 15, 2013. (AP Photo/Adj Nicolas-Nelson Richard, ECPAD, EMA)

  • Members of pro-Islamic human rights groups gather in front of the French consulate in Istanbul, Turkey, Wednesday, Jan. 16, 2013 to protest against France's military intervention in Mali. (AP Photo)

  • Members of pro-Islamic human rights groups shout slogans in front of the French consulate in Istanbul, Turkey, Wednesday, Jan. 16, 2013 to protest against France's military intervention in Mali. (AP Photo)

  • An Ivorian officer (sitting) and other ECOWAS army officers prepare a document during a meeting of chiefs of staff on January 16, 2013 at the Mali peacekeeping traning center in Bamako. (ISSOUF SANOGO/AFP/Getty Images)

  • A soldier stands guard during a meeting by ECOWAS chiefs of staff on January 16, 2013 at the Mali peacekeeping traning center in Bamako. (ISSOUF SANOGO/AFP/Getty Images)