Nominally half a mile in a taxi (5)

I believe the answer is:

caleb

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'nominally' is the definition.
I don't know anything about this answer so I can't judge whether this works.

'half a mile in a taxi' is the wordplay.
'half a' suggests halving the letters.
'in' indicates putting letters inside.
'a taxi' becomes 'cab' ('cab' can be a synonym of 'taxi').
'mile' halved is 'le'.
'le' going into 'cab' is 'CALEB'.

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(Another definition for caleb that I've seen is " Chap".)

I've seen this clue in the Evening Standard.

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