Overexcited constituents forget Covid while touring English city (6)

I believe the answer is:

exeter

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'english city' is the definition.
(city in the south west of England)

I can't explain the rest of the clue.

(Other definitions for exeter that I've seen before include "Devon's county town" , "City at S. end of M five" , "Oxford college; city" , "County town and cathedral city of Devon" , "Administrative centre of Devon" .)

I've seen this clue in The Irish Times.

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