Bloodsucker among several EEC heavyweights (5)

I believe the answer is:

leech

'bloodsucker' is the definition.
(I know that bloodsucker can be written as leech)

'among several eec heavyweights' is the wordplay.
'among' indicates a hidden word.
'LEECH' is hidden within 'several eec heavyweights'.

(Other definitions for leech that I've seen before include "Old medicinal sucker" , "Bloodsucking annelid" , "Proverbial bloodsucker" , "Blood-sucking worm or parasitic person" , "Archaic word for physician" .)

I've seen this clue in The Sun.

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