ChrisKH said:Considered this for my two, but when you look at the route (and cost) there's very little time spent in the water. Better value from a Tfl boat from Waterloo to Tower Hill or Greenwich and/or London Bus trip round the capital.
My two love the science and NH museum.
One of these DUKWs came past me on the south bank last time I was by the London Eye. Good point about the river taxi's being cheaper, but many would pay this just for the experience of having a ride in one.