The best place to eat in the U.K. is the pub. Don't bother spending a lot of money on a fancy meal because it will probably not be good. Just stick with the fish and chips.
If you can, visit Eastern Europe. It is usually much less expensive than Western Europe, and just as beautiful.
Hide your cash in several places so if it's stolen, you won't have lost all your money. And it's best to keep your passport on your body at all times because whatever happens, you need to have identification and be able to get home.