Way to earn money spent moving bodies (6,4)

I believe the answer is:

living dead

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'moving bodies' is the definition.
(dead bodies which are moving around)

'way to earn money spent' is the wordplay.
'way to earn money' becomes 'living' (someone's living or job).
'spent' becomes 'dead' (I can't justify this - if you can you should give a lot more credence to this answer).
'living'+'dead'='LIVING DEAD'

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I've seen this clue in The Guardian.

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