Thanks for the suggestions, had a great weekend.
Drove to Premier Inn at ExCel for 9:15am, got a Travelcard and DLR to Royal Victoria to pick up the Emirates Airline cablecar across the Thames to O2.
Picked up a Clipper, which went like the clappers, up to the London Eye, Tube to Kensington, early lunch in a Tapas bar (ouch spendy! cafe at NHM would have been better), then on to Natural History Museum, then V&A, then a walk through Knightsbridge, past Buck Palace etc back to tube and boat and DLR to Hotel.
The missis loved it, and I got loads of brownie points.
An I had a good triathlon on the Sunday too, in abysmal weather conditions, that made it all the more fun!
Cheers