The family of a boy with leukaemia have searched the Notting Hill Carnival to find a bone marrow donor.
Keiton has been receiving hospital treatment since the age of four
Seven-year-old Keiton Knight, from Hove, Sussex, is of mixed race, which means he is only likely to find a match with someone else of mixed race.
Paris Knight, Keiton's mother, said: "It's going to keep my baby with me. A bone marrow transplant is what will basically save his life."
About 100 potential donors were found at the carnival over the weekend.
Warren Knight, Keiton's uncle, said there were to be a number of extra searches over the next four to six weeks in the London area.
All potential donors visit a clinic set up by the African Caribbean Leukaemia Trust and the Anthony Nolan Trust in Hampstead.
Mr Knight said less then a teaspoon of blood has to be given by each person to be sent for analysis.
The whole process takes up to three to four weeks. Once a match is found the potential donor has to be contacted to see if they are willing to be a donor.
Keiton's mother added: "We just really, desperately, need people to come forward."
There are nearly 365,000 people on the UK bone marrow register, but only around 10,500 have an African or Caribbean background - less than three per cent of the country's potential donors.
Keiton has been going to hospital since the age of four to receive treatment for the cancer.
"He's having loads of treatment. He has to have chemotherapy, radiotherapy, a lot of other different preventative medicines," his mother said.