Lexisgranny
My grandmother told me that the local baker used to fire up his ovens on Christmas Day and many people used to take their turkeys there to be cooked. I often wondered how they worked out which belonged to which family, not too mention the different times different sizes would take to cook!
When I lived in Devon, the local baker would do just this (up till about 10 years ago when he died). People would bring their turkeys with about a page of instructions regarding weight, cooking times, temperature, etc. Once when he was drunk in the pub, he told us what he did ("I just whack 'em all in for 2 hours on full heat, nobody would dare complain....")