Hello Rosemary,
round here ( west wales) land goes for about 1 pound an acre per week, but that isn't a fixed ammount . It can depend on many things ( how many people wanting to rent it being just one !!) access ,type , fencing and so on . Although it is very cheap really to rent , hardly any comes available . To keep a horse on land costs a fiver per week . Hope that helps in some way ...? not sure how though really ....lol.
cheers
Russ