Comedian will meet Queen repeatedly, I bet (7)

I believe the answer is:

wagerer

'i bet' is the definition.
(someone who bets)

'comedian will meet queen repeatedly' is the wordplay.
'comedian' becomes 'wag' (I've seen this before).
'will meet' is a charade indicator (letters next to each other).
'queen' becomes 'er' (abbreviation for Elizabeth Regina).
'repeatedly' shows that letters should be duplicated.
'er' duplicated is 'erer'.
'wag'+'erer'='WAGERER'

(Another definition for wagerer that I've seen is " Someone who bets".)

I've seen this clue in The Times.

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