I think you miss the point. The point is that it's not police business and I think there should be a reasonable expectation of confidentiality and certainly that the police (acting or former) don't use information they have in a political context. I think that's a dangerous path to take.
We're not, by-the-by, the employers of MPs. We elect them. I couldn't care less if he had scut, tbh. He's a bloke and I'd hazard not the only male to have glanced at ladies in sartorial distress and then blamed the Porn Fairy when caught. We had a chap once who didn't realise you had to empty the 'trash can.' Our official lab Frenchy made the point is splendidly gallic fashion by using said computer where full protective gear and gloves. "This," she loudly declared with the sort of withering disdain that only French women of a certain age can attain, "is because of your filthy nocturnal passions." Tbh, she's the only person I've ever met who has used the term 'filthy nocturnal passions.' Anyway, point made, he used someone else's computer for those filthy nocturnal passions. I will say that Emilie took about two hours sorting through that trash can to ascertain the precise level of filth, plot, and dialogue.
Of course, given that's Damian Green is an oleaginous smear of a man, schadenfreude isn't just a word I have trouble spelling.