(2-part post):
Hello again, BusyBee!
Bistro 1 offers a really good menu at incredibly low prices. There are 3 branches; I always use the one on Southampton Street (Covent Garden) but the other two are probably just as good.
A 3 course lunch costs �7.90. (For dinner, the price rises to �10.90). Despite the low prices for food, they don't try to make up for it by charging excessively for drinks. (A 175ml glass of the house red is �2.75, which isn't much dearer than most pubs)
The menu can be found here. (It doesn't show prices but, basically, they're as above or �1 less if you only require 2 courses. Just a few items on the menu, e.g. the Chef's Specials, might require a very small supplement to the basic price):
http://www.bistro1.co.uk/menu/Bistro1%20Sample %20Menu.pdf
The home page of their website is here
http://www.bistro1.co.uk/