Unfortunately I missed the start of the talk. Alec Jeffreys turned out to be a really really really good speaker. And brave enough to make a gag as follows
Joe Bloggs white; armed robbery 12.3 14.5 18.9 23.4 Tony Blair white; illegal invasion 9.4 10.3 17.3 24.3
Then I went to the fish and chip shop and now I am eating fish and chips.