Originally Posted by
rollingdeep
Ypu should look at what you want to do for 10 days. London has lots and lots of great free stuff - but if you are not a museum person etc then you may want to think about getting a megabus to another city for a few days. You can get journeys for a couple of pounds each way if you book in advance and generally every other city in the UK will be cheaper than London and give you somewhere else to go out in such as walking in the countryside!
If it's a first trip it's hard to avoid the big box checks (British Museum, Tower of London, Houses of Parliament, etc., as well as stuff like the pub experience or seeing a show on the West End). Also some rock 'n roll landmarks if you're into that, or an excursion to Stonehenge, etc. That's what the people back home will ask about. On later trips many things will seem like one-offs and going to see York makes perfect sense, but I think it's hard to plan a first trip that way.