A father and son are said to be fighting for their lives in hospital after being struck by lightning during a school sports day event in Northern Ireland, as flash floods caused chaos across London.
According to MailOnline, the man, 37, and his son, five, and daughter, seven, were struck at Killowen Primary School, Lisburn, around 2pm.
The three are said to have suffered severe burns, with the father and son the most seriously injured.
The man was taken to Lagan Valley Hospital in Lisburn, while his children were transported to the Royal Belfast Hospital for Sick Children.
According to reports the father and son are "critically ill" while the daughter is in a "serious" condition.
Fiona Douglas, the school's principal, said that staff and parents treated the family before the emergency services arrived, while other pupils sheltered in the nearby Laurel Hill Community College.
She told the BBC: "The thoughts of the entire school community are with the family at this time."
The Northern Ireland Ambulance Service said it arrived seven minutes after receiving a report just before 2pm.
A spokesperson told the broadcaster that people should "remain very vigilant when they are out and about" due to the possibility of more thunderstorms.
Bolts of lightning also caused homes in Stoke Newington, North London, and in Midlothian, Scotland, to catch fire, according to MailOnline.
South London was most badly hit with downpours leaving three cars completely submerged under a bridge on Wallington High Street.
Flash floods were said to have caused water two metres deep in just minutes.
Two drivers were able to reach safety themselves and a third had to be rescued by fire crews.
Further emergency calls were made after a person became trapped in a car in Coulsdon and in Croydon smoke was reported coming from a building after a lighting strike.
The flooding also had a knock-on effect to transport services, perfectly timed to coincide with rush hour.
As of 4.35pm on Tuesday, Southern Railway, which serves Waterloo, Charing Cross and Victoria among others, said its lines had now reopened but there were still delays due to the flooding.
Trains had been disrupted on all lines after the heavy rain and lines between Redhill in Surrey and Tonbridge were also blocked because of flooding at Nutfield.
The train company urged people to check for delays online before they started their journeys.