There's a few to choose from!
I've not been to Tap East, but its owned by the same people who own The Rake which is an amazing pub, not far from London Bridge you'll find bottled beers from all round the world in there, as well as a few draft.
Theres the Cask Pub and Kitchen near Victoria which has a good 10 ales of hand pump as well as about 12 draft beer, and several hundred bottles from around the world. They also own a pub called Craft Brewing Co. near Chancery lane which is similar but a bit smaller on the inside, perhaps a few more draft/cask beers on tho.
The Euston Tap (surpsisingly at Euston), has about 20 draft beers from around the world, about 20 ales of gravity pour (?) plus a v good selection of bottles.
Further afield is the White Horse and Parsons Green, however its definately worth the trip.
Thats all I cant thikn of off the top of my head atm. I'd highly recommenber the White Horse, The Rake and The Cask if you can get to any of them. :thumb: