Stephen Lawrence's mother visits his grave in Jamaica

In April 1993 Doreen Lawrence was called to a hospital where she was told her 18-year-old son Stephen had been stabbed to death by a gang of youths in south-east London.

Since then she has campaigned tirelessly for his killers to be brought to justice.

Panorama reporter Mark Daly joined her on a recent visit to her son's grave in Jamaica.

A Panorama Special - Stephen Lawrence: Time for Justice, BBC One, 3 January at 21:00 GMT and then available in the UK on the BBC iPlayer.