We had a great time in London. Here's a little about our trip (2 adults, 2 kids (11 & 13) )........
Holiday Inn Camden Lock - Great location to stay. (No alarm clock, hair blower outside of bathroom.) Clean hotel, friendly staff (especially Federica who helped with tour plans), lots of shops, restaurants, and short walk to Camden Town Underground Station. The Ice Warf, The Diner (breakfast), Mr Pretzel, Samba (frozen yogurt) were our favorite stops to eat near the hotel. Cafe Chula (mexican) while good was way over priced.
Camden Market - Lots of eating stands, lots of shopping.
Camden Town Undergound - Has escalators, but during a busy time had to use stairs to go down. Station closed Sundays something like 12-17, but I thought it was mentioned for outbound only. If coming into town with luggage or just want to avoid massive crowds on Camden High Street, recommend walking Parkway to Arlington Rd to the Holiday Inn (Jamestown Rd).
Bus Stop - Tired of the underground, take Bus 24 from Camden Rd down to Victoria Station (stops include Tottenham, Leicester) . Take Bus 27 to Baker St (Madame Tussauds). See londontoolkit.com/mnu/london_transport.htm for London Public Buses - Central London Map.
Favorite Stations to Visit (shop/eat) - Kings Cross/St Pancras & Waterloo. I'm sure there are other great stations, but these were the ones we visited.
Canturbury - Train from St Pancras (special online pricing). Shortest travel time was 56 minutes. Relaxing river tour, shopping, eating at Cafe Rouge, Evensong service at the Cathedral 17:30 - 18:15 (check for times on day of travel). We were there the Monday after Easter and most shops were closed by 17:00.
Other Faves: Marks & Spencer (M&S) store. St. Stephen's Pub (Westminster Station, WONDERFUL Sunday Roast).
Other Visits: Harry Potter Tour (Evans Tour), Madam Tussauds, Science Museum (too long of line for Natural History Museum), Primark (Tottenham Station), Harrods, Tower of London.
Onto Paris via Eurostar!