The rules for the rich side are that all the food that was not consumed was to be returned to the store room by 8pm. So why have the HMs been allowed to take food with them in their bags over to the poor side?
The E4 ticker suggested the rulls conflict, the rules also said "Anything that can be fit into the small bag may be taken over", so they took advantage of this, and apparantly BB has let it go..
There seemed to be a lot of frozen vegtables left over and I guess those will go straight back to them in the next weeks shopping (as theres no best before problem to worry about).
I think the whole reason they are situated so close to a Tesco's is that all the production people need somewhere to go in the middle of the night when they get the munchies!