Doreen Lawrence carries Games torch
Doreen Lawrence said she was "quite emotional" as she carried the Olympic flame in memory of her murdered son Stephen.
Waiting crowds cheered and applauded as Mrs Lawrence broke into a gentle jog.
She carried the flame to the forecourt of the learning and development centre in Deptford, south-east London, named after the black youngster who was killed in an unprovoked race attack.
Mrs Lawrence, 59, said the Olympic Flame symbolises many things in common with the Stephen Lawrence Charity Trust, such as strength, unity and diversity.
She said: "It was amazing to be part of the relay this morning, quite an emotional experience to run in to the Stephen Lawrence Centre.
"The torch represents the community and it is fantastic for the torch to be part of the Stephen Lawrence Charitable Trust and centre."
Mrs Lawrence is one of 187 torchbearers, including tennis ace Andy Murray, who will carry the flame 36.88 miles through the London boroughs of Lewisham, Bromley, Croydon, Sutton, Merton and Wandsworth.
The Olympic torch will feature on EastEnders, be carried by the one-time captain of the Starship Enterprise, and visit the hallowed lawns of Wimbledon.
In a star-studded day for the flame, Sir Patrick Stewart, who played Captain Jean-Luc Picard in Star Trek, will be boldly bearing the torch in a school in Croydon, south London, at around lunchtime.
Later it will be carried around the All England Tennis Club at Wimbledon by Venus Williams and Andy Murray, who was recently defeated by Roger Federer on Centre Court.