@Ionus,
Ionus wrote:
Can you pair of fools cite one document that lists an English slave being sold in England after the Norman Conquest ?
Well, the first slaves arrived in London in 1555. In 1595 Queen Elisabeth complained in a letter to the City of London that too many black slaves were there ... ....etc etc
Sources: Ackroyd, Peter: London. The Biography [I've only the German translation at home]
Gerzina, Gretchen Holbrook: Black London: Life Before Emancipation, Piscataway, 1997
Walvin, James: Black Ivory: A History of British Slavery, London, 1992
(There's more, but that's just what is behind me in the bookshelf.)
As for documents: go to the London Metropolitan Archives.