A group of us used to like visiting Blah Blah Blah when it was in Shepherd's Bush and we finally made it to the new Twickenham site. We had a very pleasant dinner at a reasonable (for London) cost - most people had 2.5 (shared desserts!) courses plus alcohol and it worked out at an average of Â£35/head including alcohol.
They had plenty of vegan food choices - more I think than at times in their previous incarnation. I had an Indian style meal with a chat dish followed by a curry and then tea as I didn't have room for dessert (but the desserts were said to be excellent).
The food was nicely cooked and well-presented. I didn't get around to having the discussion about whether any of the wine was vegan but will next time I go. (You can't BYOB and pay corkage, as you could at the old place.)
The new restaurant is quite large and it was not very full when I went. I hope people are not being put off by the fact it's a bit out of town. Twickenham is easy and fast to get to from central London and you can even use your PAYG oyster card. Go on, live dangerously.Pros: Good choice for vegans, Well prepared and nicely presented food, Friendly service
Cons: Out of town - but easy to reach