Uniform tidy: left after meal (7)

I believe the answer is:

uneaten

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'left after meal' is the definition.
'uneaten' can be an answer for 'left' (I've seen this before). I am not certain of the 'after meal' bit.

'uniform tidy' is the wordplay.
'uniform' becomes 'U' (phonetic alphabet: alpha, bravo, charlie etc.).
'tidy' becomes 'neaten' (synonyms).
'u'+'neaten'='UNEATEN'

Can you help me to learn more?

(Other definitions for uneaten that I've seen before include "Not consumed as food" , "Left after dinner" , "not chewed" , "still on the table?" , "Not taken in" .)

I've seen this clue in The Times.

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