Foot could be protected by this prime minister (10)

I believe the answer is:

wellington

This clue is a double definition.

'foot could be protected by this' is the first definition.
(Wellington boots are worn on the feet)

'prime minister' is the second definition.
(Duke of Wellington)

(Other definitions for wellington that I've seen before include "made to splash through the wet" , "way to serve beef tenderloin" , "Statesman" , "Bomber" , "Knee-length boot" .)

I've seen this clue in The Times.

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