A baguette, cheese and instant soup (from tea pot hot water in your hotel) at the above mentioned Tesco, etc. will do it.

As an Englishman said, go to one of the Stock Pots where you can still get a meal for a fiver.Pounds that is! There are several in London; Off Leicester Square at 40 Panton St. up from the Comedy theater, behind Harrods, Old Compton St., off Oxford St., etc.

If its fish and chips (or pub grub,) we always get fish and chips at St. Georges Tavern, 14 Belgrave Road. Upstairs in Victoria Station, out the back, turn left, 1 block on the right. Very good. Try one to share first, it's enough for us. You can always order a second. Click on below for more info. About 7 pounds. However, a pint of beer is no longer cheap.