What to feed my house spider?

I just caught a spider and its in a large coffee jar now. I'm from england and its one of the ones with small elongated bodies and long legs. I have put a fly and a meal worm in there already just wondering what else it might eat and what i should put in the jar to make it more comfortable lol. We have loads of meal worms it can have cos we have a lizard and we have hoppers sometimes but i presume id have to kill them for it first cos they would kill him. Do they eat things like ants and woodlice? Can I have a list of what they eat? Thanks.