Howdy all...
So, it seems my travels are taking me to London for around a week from tomorrow. Which means you have a perfect excuse to meet up with some (near) London-based Arduino people!
Looks like there's already a group of people meeting Tuesday January 13, 2009 at 6:30pm so we could tag on there or organise our own thing at another time.
Who's interested/available?
--Phil.
P.S. Know any other London techy events I should attend?
When in London, one should visit the Science Museum: http://www.sciencemuseum.org.uk/
That was quick, thanks for the suggestion. 
I must also remember to travel a little further and check out Bletchly Park which has also been recommended to me.
--Phil.
Yes, definitely worth finding out about Bletchley Park: http://www.bletchleypark.org.uk/
Or if you want a trip further afield, there's the (sadly grounded) Concorde at Filton: http://www.concordeatfilton.org.uk/
That one, of course, is near Bristol, and not far from where I live (nearest station is Bristol Parkway).