Flirt without fellow? Ms Denise Van Outen dancing around subject (13,7)

I believe the answer is:

environmental studies

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'flirt without fellow? ms denise van outen dancing around subject' is the definition.
I know nothing about this answer so I cannot tell whether this works.

'flirt without fellow? ms denise van outen dancing' is the wordplay.
'without' is a deletion indicator.
'fellow?' becomes 'f' (abbreviation - of a society etc.).
'dancing' indicates anagramming the letters.
'flirt' with 'f' taken out is 'lirt'.
'lirt'+'ms'+'denise'+'van'+'outen'='lirtmsdenisevanouten'
'lirtmsdenisevanouten' is an anagram of 'ENVIRONMENTAL STUDIES'.

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I've seen this clue in The Guardian.

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