What sort of savory British party food is there?

I'm throwing a Harry Potter movie marathon party and I'd like to have themed food. Unfortunately the majority of the food that is easy to pull from the books is candy from Honeydukes or sweets like pumpkin pasties. What sort of movie snackage can I provide so there are no sugar comas, these movies do take a whole day so lunch and dinner. Any comments would be greatly appreciated!