Tuesday April 22nd, will be the first tweetup in London. This will be a chance to meet in real life people you may follow through Twitter in London or area. The tweetup will start around 7:30. The event will be held at Coffee Culture on Richmond St (map) in the back area of the coffee house.

Sources:
01. 2008/04/21 - ALU: London Tweetup

If you want to learn about Blogging, Podcasting, or anything else Media
or just want to hang out and chat with people involved with the
community come on out. We can help set up a blog or podcast or show you
tips on how to improve. Any level of know how or experience is welcome.
Bring a laptop if you have one, Molly?s has FREE Wi-Fi!