didnt the opening titles of Fawlty Towers always show the sign/nameplate of the hotel, but with different anagrams each episode?
I could be mixing this up with The Rise and Fall of Reginald Perrin, another britcom of the same era, tho its very possible both shows did it. Perrin worked at Sunshine Desserts, and as he entered the building each morning, a different letter would have fallen off the sign

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