For something simple and very British, try a sausage casserole (also works really well for any other kind of casserole and also chunky vegetable soup). This basic recipe can be altered and doctored to suit any taste, using any meat or vegetables, and is great comfort food in the winter!
Just chuck in some chopped potatoes, carrots, mushrooms, onions or other kind of hard vegetables you like (sprouts, turnip, celery, etc).
Add any kind of sausages you like, cut into smaller pieces.
Add your liquid so it just covers everything. I like to use a can of chopped tomatoes as well as water, but you can add left-over wine, stock, etc.
Crumble in a couple of stock cubes, a bit of dried mixed herbs, some pepper if you like it a bit hotter, and any other flavourings you want.
Then turn on the slow cooker, go to work, and when you get home in the evening your dinner will be ready for you!