Crossword Genius

Cockney cads — slippery types (4)

Ross

I believe the answer is:

eels

I believe this clue is a double definition.

'cockney cads' is the first definition.
('heels' - 'heel' can be a synonym of 'cad' - said with a cockney accent, dropping the 'H')

'slippery types' is the second definition.
(slippery as an eel)

(Other definitions for eels that I've seen before include "Slippery customers" , "Abstract nineteen sixties style" , "Congers" , "Anguillae" , "Sea snakes among lees" .)

I've seen this clue in The Times.
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