(Fox sitcom, 1987-97)

Episode 6:24:
Made in 1992, this is the first of a three-part story that concluded season 6, this brought the Bundy family to London. It's always slightly uncomfortable when larger-than-life studio characters are let loose in the real world, and this case is especially strange when they come face to face with such British faces as Alun Armstrong and Bill Oddie (Bill Oddie? No, really).
The tomfoolery includes an appearance by London Coaches AEC Routemaster RM545 (WLT545), vinylled for 'The Original London Sightseeing Tour.':

A sister vehicle has a rather clumsy-looking open-top conversion, seen in background here: