Crossword Genius

A barge touring London’s outskirts? It won’t stop until morning (3-7)

Ross

I think it could be either:

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10

3-7

all-nighter

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'it won't stop until morning' is the definition.
I don't know anything about this answer so I cannot judge whether this works.

'a barge touring london's outskirts?' is the wordplay.
'barge' becomes 'lighter' (synonyms).
'touring' indicates putting letters inside (tour can mean to go around).
'outskirts?' suggests removing the centre (I've seen 'outskirts of' mean this).
'london' with its centre removed is 'ln'.
'lighter' enclosing 'ln' is 'llnighter'.
'a'+'llnighter'='ALL-NIGHTER'

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I've seen this clue in The Times.
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