The parents of three French schoolchildren injured in the Westminster terror attack have flown into London where the teenage boys are being treated in hospital.

Two of the three boys from Brittany are in serious condition but none are believed to have life-threatening injuries.

The teenagers were walking along Westminster Bridge when they were hit by the speeding Hyundai car, travelling at up to 50 miles per hour.

Twelve Britons were also among the injured, as well as two Romanians, four South Koreans and two Greeks as well as individuals from Germany, Poland, China and the US.

The group’s teacher said: “Three of us were hit, we don’t know if they are dead or not. I cannot speak anymore, I don’t know what to say.”

According to local newspaper Le Télégramme, the children were part of a group of 92 students from the "European" section of Saint-Joseph, a private sixth-form college.

It emerged today they school has already suffered tragedy at the hands of terrorism, having lost a former pupil, 25-year-old Estelle Rouat, in the Bataclan massacre in Paris in 2015.

The parents arrived in London last night on a Falcon jet that is part of the French government fleet. French Foreign Minister Jean-Marc Ayrault was expected to arrive in London to visit them at hospital, French media reported.