Any ideas on just three days in London itinerary?
In no particular order: The Tower of London The British Museum Hampton Court Palace Old Westminster by Gaslight walking tour (www.walks.com) Victoria & Albert Museum The London Eye (I waffled on this recommendation - it's only okay to me - but everyone I've gone with thought it was fantastic) Dine in a Pub
Westminster Abbey
Judy, Try this question on the UK section to get more hits.
I'd suggest you browse a few guidebooks, then make a list of your "drop dead must see" things. BY this I mean act like this may be your only trip to London, ever, and what can't you live without seeing. If you're traveling with a partner, have him/her do the same. Hopefully your lists will match but if not, pick the top 2 or 3 off each. LOL you may need to do some negotiating! I'd also suggest checking into a one-day coach guided tour of London. We did this and found it immensely helpful and the tour hit all the big sights, and included lunch.