Making plainer group of women in press come across (8,5,2)

I believe the answer is:

throwing light on

'making plainer' is the definition.

'group of women in press come across' is the wordplay.
'group of women' becomes 'wi' (Women's Institute).
'in' is an insertion indicator.
'press' becomes 'throng' (I've seen this before).
'come across' becomes 'lighton' (to light on something is to encounter it by chance).
'wi' placed within 'throng' is 'throwing'.
'throwing'+'lighton'='THROWING LIGHT ON'

I've seen this clue in The Guardian.

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