Nigel Griffiths is all over the place, from claiming at first the Screws of the World had fabricated the whole story to now implying via the “close friends” off-the-record briefing ruse, that it was a forgotten in a drunken haze one-off fling. Perhaps that explains the photos – they were his aide memoire.
If it turns out not to be true that it was just a fling and the liaison was a more long term affair, he will have done himself no favours by not now coming clean and will be risking a second round of revelations. Bonking in the office may well cost him his office at the election.