Oh come on- you hadn't thought of dial-a-pizza? Or making sure the beer is in a plastic glass when you take it into the shower with you? Ok, you can also dial a huge variety of stuff, at least here. And it is a terrible habit. And expensive! But every once in a while...
Really good soup in a can works, (Progresso), few minutes in a microwave and some whole grain bread. And instant oatmeal with stuff thrown in, like fruit or plain yoghurt- really just a warm variation on my other standby.
I like to microwave up some good frozen vegetables, like peas, and just stuff myself. Sweet corn is good, too. I'm wondering though, if the stuff I could recommend is even available in Britain? We have great seafood and a local cuisine on the Gulf Coast here and if I told you to keep okra gumbo in the freezer would that make sense? (it's like a fish stew with lots of vegetables). Anything that can be pitched in the mcrowave while I'm in the shower is good- and if you cook it and freeze it you can keep the fat down and add protien powders and flax or whatever you like. Which is a pain, but the food in the stores is so crummy.

Lizzy