Downing Street tonight admitted it was “deeply concerned” by the violence that marred England’s disappointing 1-1 Euro 2016 draw with Russia.
Trouble flared inside and outside the Stade Velodrome in Marseille, with six English fans still in hospital today.
A Government spokesman said: “We condemn the violence and urge calm on all sides.
“These incidents go directly against the spirit of the tournament and are the actions of a minority.
“The vast majority of fans in France simply want to enjoy the football.
“So we welcome Uefa’s decision to launch an investigation into the violence inside the stadium in Marseille last night, and stand ready to assist in any way we can.”
The Government is “in constant contact with the Euro 2016 organisers and the French authorities”, and offered extra police “spotters” to target troublemakers, the spokesman added.
“We have offered to send further UK police to France ahead of the next England game to support the security operation around the match in Lens, and UK police will be assisting the French with their post-incident investigations and supporting them to gather evidence, including evidence against any England fans involved in the disorder.”
Home Secretary Theresa May has spoken to French interior minister Bernard Cazeneuve “to continue to coordinate and work closely together on the response”.
Shadow Home Secretary Andy Burnham said last night(SUN): “The whole country will have been appalled by the frightening scenes of violence in Marseille.
“As ever, a minority of troublemakers have soured what should have been an enjoyable occasion and put the safety of innocent people at risk.
“While the England fans are not blameless, it is clear that the situation changed yesterday and they were subject to extreme provocation and violence.
“With the rest of the tournament to go, there are concerns for the safety of supporters of all home nations.”
Mr Burnham demanded a Commons statement today from the Home Secretary outlining “the actions she is proposing to take, working with the French authorities and Uefa, to prevent any repeat of what we have seen”.
He added: “It seems the security in the stadium last night was nowhere near good enough, with England fans subject to aggression.
“The Government should be demanding answers from Uefa in particular on how this happened and what it proposed to do to improve safety and stewarding at future games.”