I need to go and buy buffet food for tonight - there is no room in the fridge

[LaurieFairyCake]

How early can I get it if it's going to sit out on a table - all prepackaged M and S stuff.

I can squeeze mayonnaisey things into the fridge - like coleslaw/potato salad but it's going to be a bit of a squeeze getting much more in.

Party starts at 6. Food will be eaten between 6-8 I guess.

Can you put it in cool bags with ice blocks?

Good idea - I have one cool bag and six ice blocks - I can definitely put the thin packs of meat - parma ham in there