It was the Blairite press officer Jo Moore who in 2001 on the day of the World Trade Centre attacks coined the infamous phrase “This is a good day to bury bad news.”

David Cameron seems to have learnt the lesson when he used the furore over Maria Miller’s avarice and arrogance to quietly give a welcome to a report from the surveillance commissioner giving the all-clear to Britain’s spy agencies following the Snowden revelations.

In vintage Cameron style, just as he tried to smother the row swirling around Miller with cavalier bravado — “She’s apologised, done the right thing and we should now move on” — so here he paraphrases the watchdog’s report as: “Agencies undertake their role conscientiously and effectively and public agencies do not engage in indiscriminate mass intrusion.”

So that’s all right then. Nothing to worry about.

This slippery eel of a Prime Minister purports not to see that in the 78 pages of the report, Sir Anthony May, the so-called watchdog, ignores the most crucial and devastating finding of the last year in this area of surveillance — a word that Cameron can’t bring himself to use — namely, the existence of the Tempora programme run by British spooks in GCHQ and MI5, which hoovers up mountains of internet data without its operations ever having been openly admitted or consented to.

In a word, it reveals the spy agencies acting completely out of control and outside any system of accountability, which for some reason May and Cameron never noticed.

Nor does May or Cameron even address the huge controversies raised about the links between the spy agencies and the private internet and telephone companies.

One important new detail that emerges from the May report is the number of requests for information being loaded on the Regulation of Investigatory Powers Act system. It turns out to be enormous — 514,608 in the last year.

May, a former judge, is supposed to oversee the warrants requested by the police and intelligence services, but that weight in numbers would mean his overseeing on average 1,410 a day.

So what proportion does he oversee in practice? Even 1 per cent, just 14 a day every day, would be quite a handful for a retired judge.

But that still allows Cameron with his Panglossian insouciance to conclude: “I believe his report provides an authoritative, expert and reassuring assessment of the lawfulness, necessity and proportionality of the intelligence agencies’ work” — words presumably dictated to him by GCHQ.

So at least we can all rest assured that our privacy is safe in Cameron’s hands.