He never flies alone (7)

I believe the answer is:

copilot

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'he never flies alone' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.

This is the entire clue.

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(Other definitions for copilot that I've seen before include "Second-in-command of aeroplane" , "Airliner crew member" .)

I've seen this clue in the Evening Standard.

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