Restaurants

Central London
Bibimbap Soho - Korean - Soho
Flat Iron - Steak - Soho
Shakfuyu - Japanese - Soho
Rex & Mariano - Seafood - Soho

North London
Andy's Taverna - Greek - Camden
Cuba Libre - Cuban - Islington

East London
Tayyabs - Punjabi - Whitechapel
Jago - Middle Eastern - Shoreditch 

City of London
Barbecoa - MEAT - St Paul's
Moshi Moshi - Japanese - Liverpool Street

South London
Asmara - Eritrean - Brixton
Bamboula - Caribbean - Brixton
Bar Lenuccia - Italian - Camberwell
Bukowski Grill - MEAT - Brixton
Chicken Shop - Chicken (pretty obvious...) - Tooting (plus Balham, Whitechapel, Holborn & Kentish Town)
Dragon Castle -  Cantonese - Elephant & Castle

Greater London
Al Boccon di'Vino - THE best Italian - Richmond