When Wells Fargo announced it had bought its new London headquarters at 33 King William Street in 2016 the US bank gave no thought to the three million television viewers who would watch 40,000 people run past the building every year.

Fast forward two years and Wells Fargo is revisiting plans for its London base with a view to installing an additional sign on the south side of the building, which faces Upper Thames Street, so it can take advantage of the fact.