Absolutely, +1 for Zaibatsu. But do try the Green Pea too if you're local (also BYOW, few quid corkage)
I'm also biased as the owner Tom helped us out on Xmas day a couple of years ago when the oven packed up. Cooked up a veggie dish for my sister at no notice and refused to accept any money.
Green Pea in Greenwich / Maze Hill. Looks a bit shabby from the outside but the owner is a lovely bloke, food is plentiful, very good and cheap.
Also, he's my neighbour. But others agree with me
http://www.tripadvisor.co.uk/Restaurant_Review-g186338-d2311519-Reviews-Green_Pea-London_England.html