|Last Updated: Monday, 5 June 2006, 18:11 GMT 19:11 UK |
Children of 11 'carrying knives'
The revelations come in the middle of a five-week knife amnesty across the UK.
But despite a spate of high-profile knife crimes, Prof Jonathan Sheppard of the Cardiff Violence Prevention group said there was no epidemic.
Prof Sheppard, a surgeon at the University Hospital of Wales, Cardiff, said there was no need to panic.
"Knife crimes, as tragic as they are, are less frequent now than they used to be.
"And the overall picture is that violent crime is coming down across the country," he said.
Christine Jones' 18-year-old son Ben was knifed in the chest in a road rage incident in Colwyn Bay by Christopher Johnson, 27, two years ago.
She said Johnson, who is now serving life for murder, had a string of knife-related offences going back over a number of years.
"It is not working, so why not stop, change it and go for harsher punishments," she told Eye On Wales.
The programme found one boy who admitted having bought a knife when he was 10, and young people were familiar with knives being carried on the streets by themselves, friends and acquaintances.
Eye on Wales spoke to one boy who carried a knife because a gang was looking for him.
Another said young people carried knives on the street because it improved their image.
"They think they are hard and basically they are showing off," he said. "But it is dangerous to carry a knife around for no reason."
Around 10,000 knives have been handed into police stations around the UK since the start of the knife amnesty in May.