you can hire a good 152 for under 80 squid all over the UK. You have to look around.
There are some places that will take a grand deposit and you can fly a 152 for 50ish an hour. As far as being airworthy if all you want to do is hour build then I am sure that any aircraft you hire in this country will be uo to scratch. Depends on how many hours you want to do.
What area of the uk are you in?