[19 Feb: Go here for an updated celebrity twitter chart]

OK, I missed a few people out of my initial list – Chris Moyles apparently spent most of his breakfast show on Radio 1 talking with Andi Peters about how he has signed up to Twitter.  So some shock new entries there.

I’ve extended the list to a top fifteen, so that I can squeeze Andy Murray into it as a token sportsman (and Fearne Cotton as the only female celeb to make the list).  Dave Gorman is a useful base point – below his 5,000 followers I suspect we are well into the C-list.

By the way, whilst Chris Moyles has done a fantastic job in getting 12,300 followers over the course of the day, Stephen Fry has added a good five or six thousand followers today simply by being stuck in a lift.

PS. If you really care about this stuff, the Guardian has a much more comprehensive list of celebrity twitterers.