Alongside that man several other people - his wife and her senior managers at a company where the crimes are alleged to have taken place - were also arrested and are being questioned about what they know.
Some of them have been arrested before, by appointment and when they felt like it, but today the police finally treated the executives to the same 'six o'clock knock' treatment which they have used on more minor players in the scandal.
It is entirely coincidental that a public inquiry currently scrutinising relations between the police and members of the trade under examination has heard in recent days of senior coppers who have not been doing their job properly.
It is also coincidental that only last week said world leader made public statements about the arrested man being a school chum of 30 years' standing.
It is a further coincidence that the arrests took place when the world leader had his first opportunity to be out of the country for a couple of days, allowing him to concentrate on photo opportunities while ensuring reports of his mate's arrest fade away before he can be asked about it.
There have been as yet no suggestions of a 'special relationship' between the police and the man in charge of running the country, as the idea is of course ridiculous.
A spokesman has yet to say: "The only special relationship the Prime Minister has is with people who make him look good in pictures, and with people who end up getting arrested."
Campaigners whose constant questioning uncovered the scandal will, if asked, deny suggestions they had any political motive for so doing although a bystander might wonder, firstly, whether we would know all this if the jackboot were on the other foot, and secondly if the government will wobble when a criminal court starts looking through its dustbins.
As news of the arrests broke, there were unconfirmed reports of ordinary journalists being seen smiling for the first time in a year.
But it might have been more of a smirk.
Don't tell 'em, Charlie!