Seem to remember Oz from Auf Widershen Pet mentioning the merits of older women when he was on a promise from some aristoc type older gal.
He said "Older women are similar to old footballers, they've had to slow down their game, but they've picked up a few tricks along the way"
Reckon Fiona Bruce would be just like an ageing Digger Barnes, not as penetrative as he once was and wouldn't work so hard going up and down the channels, but once he'd taken the ball off you, it would be impossible to get it back off him!