I had great fun for ages visiting airfields I hadn't been to. There are quite a lot within an hour or less of Coventry, so it won't cost you a fortune. Fly there, with or without a pax, have coffee or lunch, fly back, nice day out and lots of good experience. Don't go too far, especially at this time of year with short days and changeable weather. When I got my PPL(A) I was so determined not to turn into one of these pilots who were scared to go beyond the circuit that I took on much too much and got into all sorts of trouble; nothing serious but I could have done without it. So push yourself a bit, but not too much. If you want to go on longer trips take another pilot, halves the cost and the workload and doubles the fun. And you'll learn a lot that way too. Enjoy!