This is what I found: Cooker: Mcb 40, Type B, Cable size 10, Cpc size 4
Kitchen sockets: Mcb 32, Type B, Cable zize 2.5, cpc size 1.5.
As for the fuse rating, if you look at your fuseboard / consumer unit there should be a circuit labelled 'cooker' or similar, it will have a number on it...