Nominal half mile in a taxi (5)

I believe the answer is:

caleb

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

'half mile in a taxi' is the wordplay.
'half' suggests halving the letters.
'in' is an insertion indicator.
'a taxi' becomes 'cab' (synonyms).
'mile' with half the letters taken is 'le'.
'le' put within '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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