Stuart and Diana love workroom (6)

I believe the answer is:

studio

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'workroom' is the definition.
(I've seen this before)

'stuart and diana love' is the wordplay.
'stuart' becomes 'stu' (I can't justify this - if you can you should believe this answer much more).
'and' is a charade indicator (letters next to each other).
'diana' becomes 'Di' (Di is short for Diana).
'love' becomes 'o' (love means zero in tennis).
'stu'+'di'+'o'='STUDIO'

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(Other definitions for studio that I've seen before include "MGM, for example" , "Artist's workroom - film company" , "Where one might find artists" , "Type of apartment without a separate bedroom" , "RA's workroom" .)

I've seen this clue in The Sun.

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