Depends where you are. Whatever you do DON'T go to Ayhno unless you're pretty kitted and DON'T GO BY YOUR FOOKING SELF! (unless you are a nob)
Like GJ said there are a couple in east ilsley, but where abouts in oxfordshire are you? I'm up in banbury and there's a few dead nice lanes out towards brackley, and there's a load in warks or northants.