Prime Minister Gordon Brown and his wife Sarah yesterday joined families of teenagers killed in violent attacks at a memorial service to mark the eighth anniversary of Damilola Taylor's death.

Prime Minister Gordon Brown and his wife Sarah yesterday joined families of teenagers killed in violent attacks at a memorial service to mark the eighth anniversary of Damilola Taylor's death.

Conservative leader David Cameron and London mayor Boris Johnson were also at the ceremony in London's Southwark Cathedral.

Newscaster Sir Trevor McDonald told the congregation: "I believe that we all, government, the clergy, local authorities, the police, the public and the media, need to stand alongside families such as those gathered here today and say, Enough is enough'."

Sportswoman Dame Kelly Holmes said: "As we remember his short life let us reflect on all those that we have lost in the years that have followed. How many other aspiring doctors, footballers, pop stars or Olympic athletes have we lost?"

About 30 families who have lost loved ones to gun and knife crime since Damilola's death were at the service, led by the Dean of Southwark, Colin Slee. The Archbishop of York, Dr John Sentamu, gave an address.

Damilola's father, Richard Taylor said: "I would like to dedicate this day to all the children who have been taken from their families in the eight years that have followed. My heartfelt thanks to all of you who have joined me today."

Damilola, born in Nigeria, moved to this country with his mother and sister in 2000 and was killed on his way home from the local library a few months later.