New Diamond. Very excellent and reasonably priced Chinese food.
We ate aubergine hotpot - a kind of delicate aubergine stew with small slices of pork in a rich sauce, sliced pork with pickled vegetables, bolied rice and tea which came to 19UKP plus service. The hotpot's from the chinese language end of the menu and if you're interested in trying more than the usual Chinese menu fare it's worth asking for recommendations. It'd be best to have an idea of what sort of things you'd like (hotpot is a fairly safe bet but check it's not one of the weirder ones as not everyone likes fish lips hotpot).
Decor's pretty good for a Chinese eaterie and the staff and unfailing sweet, helpful and patient. If I want a lunch of duck and crispy pork on rice for less than a fiver I'll still go to the Canton but for anything smarter it's the New Diamond from now on. I give it five stars.
Some user reviews from london-eating here.
Time Out's review here.