The downstairs scenes in the bar were shot at the Warrington pub in Maida Vale whereas the upstairs scenes in Iris's bedroom and on the landing by the telephone were shot at Colet Court in Hammersmith. There is a very jarring cut between the two when the old man runs up the stairs to answer the phone and then runs back down to the bar in a panic to give his "Old Bill - all over the place" speech. As seen from upstairs, the staircase has two flights in opposite directions with a half landing in between, and has no carpet. Seen from below, the staircase has two flights at 90 degrees with a half landing, and has a red carpet.