Stephen Lawrence wanted to become an architect

The 18-year-old student died after being stabbed during an attack by a gang of white youths on 22 April 1993.

Nobody has ever been convicted of his murder.

After the Crown Prosecution Service said there was not enough evidence against the five main suspects to bring a case, the Lawrence family brought a private prosecution.

It resulted in a trial of three of the men in April 1996 but the case collapsed within a week after eyewitness evidence was ruled inadmissible.

Over the years the case of Stephen Lawrence has become famous around the world.

Stephen's killers have shown no remorse, I believe they would do it again Doreen Lawrence

But speaking on BBC Radio Four's Woman's Hour programme Stephen's mother, Doreen Lawrence, said at the beginning she had not been aware of the importance of the racial element.

"At the time I only knew I had lost a son," Mrs Lawrence said.

She recalled the moment she learned her son was dead saying she had been unable to take in the news.

An inquest into Stephen Lawrence's death ended in February 1997, with the jury deciding the teenager had been "unlawfully killed in a completely unprovoked racist attack by five white youths".

In 1999 a report following a public inquiry into the circumstances surrounding his death criticised the Metropolitan police for 'institutional racism' and attacked their handling of the case.

Mrs Lawrence said she had not yet forgiven his killers.

"Stephen's killers have shown no remorse, I believe they would do it again," she said.