Originally Posted by
Suzzin
The Big Red Bus tours are another idea for your day. If I recall correctly, you can buy a ticket with on-off privileges good for 24 hours. On the first day, when you are tired and jet lagged, you can just ride around the circle, seeing everything and making notes of what you want to revisit. You can use the bus almost as public transportation to get you from place to place. There are also bikes you can rent, a ride through Hyde Park in August would be lovely! And although you said you're not interested in shopping, it's worth wandering past/through Harrod's just as a sight-seeing option.
I've not tried the Big Red buses but I can't see any real reason for using them here. Everywhere they go is also covered by multiple regular TfL double decker bus routes which cost a fraction of the price.
In any event you will in my view get far more out of walking around than sitting in traffic on a bus. Swiss Tony's suggestion of using the Clipper is also a good one. As is taking the Boris Bikes (Santander Cycles) for a whirl around Hyde Park - keeping to the permitted cycle areas of course