Took Thumper up to Guys Hospital in London yesterday. Much admired there and on the way down. Returning through the City, I was held up and diverted around the Bank as there was a film being made based around the 1930s; judging from the garb the extras were wearing and the period vehicles on view. I think they thought the M3W was part of the props. It was quite incongruous being photographed by 1930s people with their smartphones.