In another Sainsbury's, I saw David Trimble considering a Secretary DVD. (That Sainsbury's has since been demolished.)
Saw Mark Lawson outside a Sainsbury's Local in Bayswater a couple of times, too. Don't know where he was going. Possibly to visit Mel B who I once saw getting out of a car nearby?
Or Pete Burns, who I once saw in a Starbucks in Notting Hill. I expect Mark Lawson and Pete Burns would have got on like a house on fire.