Something that is really economical is to buy a little joint of ham/gammon for about £4.50. That will do the following meals.
Ham roly poly with parsley sauce and carrots
Half packet of suet, SR flour (double the volume), twist of pepper, add water to make a dough, roll out to about 1/4 inch thick, cover with a layer of finely chopped uncooked ham and steam for about two hours.
Serve with Parsley sauce (tablespoon flour, tablespoon butter made into a roux and add 2/3 pint of milk and a large bunch of chopped parsley, salt and pepper).
Accompany with carrots and a green veg.
The same bit of ham will then do a carbonara: chopped ham, chopped shallot, bit of chicken stock, handful of cheddar, creme fraiche or tiny tub of cream, salt, pepper. Serve with economy pasta and some salad.
You should still have enough ham left to make something like a pea and ham soup (use tinned peas and chicken stock) or a quiche, or a ham a potato bake (ham and potato bake: chopped ham, two three big bakers peeled and sliced, onion sliced - layer it all up and pour over a pint of cheese sauce - serve with carrots and cabbage).