Speaking of signals for Sheila, the candlelit setting just might be another clue...
Actor and presenter Peter Purves (b.1939 and still with us) first made a name for himself as Steven Taylor, companion (1965-66) to the first Doctor Who. Popular for many other productions and shows, his name became popular in Cockney rhyming slang for "nervous." Waving hello from across the pond, good sir!
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