As it says on the BBC WDYTYA site, history is not black and white for Ainsley Harriott.
Even more intriguing, and something which the programme makers missed a trick on, is the fact that, according to a book called Archibald Monteith, Ainsley's ggg-grandfather George David Harriott (the one who sold slaves to the 4 year old James) was NOT white, but was listed as "Mestize", or mixed race, and married a white woman named Mary Goodfellow in 1800. Their marriage was recorded in the "White" section of the parish record, and their children were therefore classed as white.
Now, that is something I find highly interesting!
(For more info, do a Google search on "George David Harriott" and its the second link. Can't post a direct link here to Google books)
Glen