Just to underscore what Elaine says above, wholemeal often isn't wholemeal. The real bread campaign found one supermarket selling a wholemeal loaf which contained only 6% wholemeal flour. It takes time to learn what foods you can trust.
http://www.sustainweb.org/publications/?id=266
This site though has a real bread finder. I found a local artisan baker and they do many loaves which are OK for me. Try the finder utility by entering your postcode;
http://www.sustainweb.org/realbread/
It's worth the effort as once you find some bread you can eat, sandwiches form the major part of a meal that you can take from home, along with a flask of soup, pickles, some fruits, some yoghurts etc.
If you can eat porridge, not everyone can, you can do that in a microwave but without at least a hob, you are limited. Bacon and eggs and german sausages (hardly any starchy filler allowed) are pretty common in the low carbing community.
You might get away with a cheap Teppanyaki grill, basically it's a hotplate type grill which you can use on the table. I got one from Lidl for £28, here's a smaller on on amazon for £20.
http://www.amazon.co.uk/Andrew-James-El ... yaki+grill
It's fat free frying and will do most things from fish fillets to bacon and eggs. It's ideal for quick cooking. It won't do your soups, but they will cook in the microwave. Another useful kitchen item is a halogen cooker:
http://www.amazon.co.uk/s/ref=nb_sb_ss_ ... chen%2C453
Also, most 2nd hand shops or charity shops have slow cookers in them because loads of people bought them, never use them and then decide they'd be better off with the space. You can probably get one for under a tenner on ebay. These are great for doing low carb stews because they are slow. They cook whilst you are asleep. It really just a question of throwing in your ingredients, I like lamb and barley stew, switching on and then going to bed. These types of meals benefit from cheap ingredients which take a long time to cook so, you don't have to trim off fat or gristle etc. It will all break down in the slow cooking process and taste better for it. There are loads of recipes on the web and if one containes potatoes, if they spike you, although new potatoes are normally OK, just substitute with barley or reduce the amount of potatoes used. Most take 10 or 15 mins to prepare and 8 hours to cook.