An 8-year-old boy has been seriously injured after a bus hit him while he was riding his bike in Barnet.
He suffered head and leg injuries in the collision and was taken to hospital, where he remains.
His injuries are currently described as life threatening.
The driver of the bus stopped at the scene and has not been arrested.
Police are appealing for witnesses.
A minute's silence has been held at a school in Muswell Hill in memory of 11-year-old Sebastian Bowles, who died in this week's coach crash in Switzerland.
The headteacher said he was "a little cherub".
Orginally from Crouch End, Sebastian was one of 22 children and six adults killed after a skiing trip.
Sebastian went to one of the schools in Belgium that organised the trip, after his parents moved there two years ago.
Swiss police said in a news conference that the prosecutor cannot confirm reports that the bus driver was trying to insert a DVD. The police also said there were no traces of alcohol in the body of the driver and he slept very well the night before and was well rested.
But police added that they cannot say yet if technical or human error was the cause of the crash. People affected by this incident are receiving psychological help.
In the news conference in Sion Swiss police said all the dead from the bus crash were identified within 48 hours and they added that a technical investigation is now under way. The police have retrieved recordings which will give details about the bus journey from departure.
No other vehicle was involved in the accident. The police have details of the exact speed at the time of the accident - it was lower than the limit in the tunnel. They said: "We cannot blame speed for the accident." Belgian and Swiss authorities are working together in this matter.
This is the iast school picture of Swiss coach crash victim Sebastian Bowles taken at his former school, Our Lady of Muswell Catholic Primary School In North London.
In statement headteacher, Theresa McBride said the school community was "still reeling" from news.
She says they called him a little "cherub" because he looked like an angel and behaved like one too. Children and staff held a one-minute silence in his memory.
The former school of Sebastian Bowles, who died in a Swiss coach crash, said in a statement that he will be greatly missed.
Our Lady of Muswell Catholic Primary School, which Sebastian attended from September 2003 to July 2009, also described the 11-year-old as a "little cherub" and a vibrant boy.
A boy from north London was among the 28 people killed in a horrific bus crash in a Swiss tunnel, it emerged today.
Sebastian Bowles, 11, was one of the 22 children who died in Tuesday's crash, a spokesman for St Lambertus School in Heverlee, Belgium, confirmed.
The tourist bus carrying 52 people hit a wall returning from a ski holiday in the Swiss Alps.
School representative Dirk De Gendt said Sebastian's British father Edward and Belgian mother Ann landed in Brussels last night after identifying their son's body in Switzerland.
Mr De Gendt said: "They landed in Brussels at 10.45pm. The mother had gone to Switzerland with a group of parents and the father had flown directly from London to Switzerland."
He appealed for the parents to be left to grieve in private.
According to The Sun, Sebastian's father moved his family from London two years ago to be near his wife's relatives.
The family previously lived in Crouch End, north London and now live in Louvain, the newspaper reported.