The Incredible Shrinking Meat

I don't know what it is with the meat in the UK, but bacon, beef and prawns do this incredible shrinking thing when they hit the pan - like the reverse of those tiny rubber toys that grow in size when you "just add water". Prawns over here - as per my cous cous and pine nut salad I took with me to Victoria Park today, are the size of two raisins :/ And I thought I had a good deal when I got a styrofoam cup worth of prawns for ₤1.50.... (Why do prawns have to have such big heads?)

Maybe that explains why the chicken from KFC is so tiny - I always assumed that they must have either been using the pigeons from Trafulgar Square or rats :p~