Sekforde Arms, if it is a traditional London pub you are looking for with locals, carpets and darts then this is the best. If you want gastropub go to the Well nearby.
The beef lasagne is terrible! It contains no pasta, but rather a inch think layer of microwave hot molten cheese, which quickly cools to rubber as you scrape it away to find a very thin layer of meat.
Used to be really old school, not so much now but still a great little boozer off of the main road. Remember it's a residential street though for outside noise!