James and Leslie, involved in fencing (7)

I believe the answer is:

wattles

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'james and leslie involved in fencing' is the definition.
I can't judge whether this definition defines the answer.

'james and leslie' is the wordplay.
'james' becomes 'watt' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'and' says to put letters next to each other.
'leslie' becomes 'les' (short for Leslie).
'watt'+'les'='WATTLES'

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(Another definition for wattles that I've seen is " Loose skin hanging on lizards' necks".)

I've seen this clue in the Evening Standard.

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