We not getting ads here in the UK, maybe 'cos it's the BBC. The final bit is an excerpt from a comedy "Only Fools and Horses."
I also read on the contractor's website that the chandeliers were never put back the same way when they were cleaned previously, so they had to use the 1960s photos to make a best guess.
I may get to the museum in St Helens next month so maybe I can take some photos to add here.