EastEnders star leads hundreds of teenagers on march to demand an end to the violence after her brother's stabbing

Former EastEnders actress Brooke Kinsella and her sisters Jade, 22, and Georgia, 14, each wore a T-shirt carrying different pictures of their brother.

Knife plea: Young protesters led by Ben Kinsella's sisters march through London

Devastated: Sisters Jade, Brooke and Georgia Kinsella with Ben's friend Louis Robson son of actress Linda Robson

As they gathered around the makeshift memorial close to where Ben was killed, Miss Kinsella's voice cracked with emotion as she told the crowd: 'I know some people may think this is a big deal because of Ben's connections.

'But trust me, what we are doing here today is for every other child.'

She urged anyone with information about her brother's murder to come forward.

He was attacked after being chased by a gang of four youths at around 2am on Sunday and became the 17th teenager to be murdered in London this year.

In mourning: The marchers pause and weep at the murder scene

Remembering a friend: Teenagers wore t-shirts with their own messages of grief

The sisters took part in the rally a few hours after going with their parents, cab driver George, 48, and Deborah, 46, to see their brother's body at a morgue.

Five hundred youngsters, dressed in white for peace, walked the two miles from Islington town hall in North London to the scene of the murder chanting 'stop the knives'.

Tragic: Ben, 16, was stabbed to death during a night out to celebrate the end of his GCSE exams

Many wore T-shirts with carrying slogans such as 'RIP Ben. You're an Angel', 'Stop Knife Violence' and 'You're Always in Our Hearts'.

Gary Bellamy, 48, arrived at the town hall, not far from the murder scene, with Ben's second cousin, Jason Kinsella, carrying a 10ft square banner proclaiming 'Why Ben?'

He said: 'It's got to stop somewhere. I know we are saying "Why Ben" but there was a fellow in his 30s stabbed this morning on the news as well.

'At least by doing this we are showing a bit of strength and unity. I just hope that people stop and take notice of what's happening.

'It doesn't matter what colour or creed people are, it's such a waste.'

Birds Of A Feather actress Linda Robson, 50, also joined the march with her 16-year-old son Louis, who had cradled Ben in his arms as he lay dying.

She said: 'When you've got a knife in your pocket, you are obviously intending to use it. We need to stop them carrying knives in the first place.

'They should go straight to some institution - borstal or something.'

Four youths in their late teens have been arrested in connection with the murder annd are being questioned by police.

Mass grief: The crowds march as one to demand an end to the violence