My advice would be to rent a C150 from the outfit I work at based at Breighton, but then I would say that!
Seriously though, there are plenty more places than the two you've come up with, or even possibilities of buying into a group for a few months.
At somewhere like Breighton, there might also be options to offer some of the old boys some fuel money, and do a load of hours with them in some interesting types - and log P1.
Will multiflight let you take their aircraft away overnight, or to unlicensed airfields, or let you land on grass..?