Want this question answered?
visit big ben
Stalk One Direction
London was actually in the Klondike, so it was easy to write down some of the things and fictionalize them a bit to make it into a story.
Some good things to see in London are: Big Ben Kew Gardens London Bridge Wembley Stadium London Eye: you need to go on it. Its the worlds biggest Ferris wheel. Tower of London and last but not least.... Buckingham Palace: you have to see this also.
You can't buy things in London with American money.
If you are writing a book, your information needs to be accurate. Why not visit a good bookshop and buy a quality travel guide to London? Berlitz and Rough Guides are good.
Try Wikipedia
Drugs and offensive weapons
adverture things and animals
Some events can't be held in London. Sailing for example.
Some of the larger stores in tourist areas will accept Euros - otherwise you will have to use the pound sterling (£) (GBP).
you should pack some worm clothes fancey clothes to go out for dinner and night club clothes