Okay, wow... Follow the link to that article you gave for that website, which gives a link to here: http://www.legislation.gov.uk/ukpga/2000/23/section/53
Which is a website that says, first and foremost:
Changes to legislation:There are outstanding changes not yet made by the legislation.gov.uk editorial team to Regulation of Investigatory Powers Act 2000. Any changes that have already been made by the team appear in the content and are referenced with annotations.
Basically the very first thing it says on their source is that the source itself is out of date. I'm quivering in my shoes, really.
Oh, and secondly:
(2)In proceedings against any person for an offence under this section, if it is shown that that person was in possession of a key to any protected information at any time before the time of the giving of the section 49 notice, that person shall be taken for the purposes of those proceedings to have continued to be in possession of that key at all subsequent times, unless it is shown that the key was not in his possession after the giving of the notice and before the time by which he was required to disclose it.
So the whole article is based on an incorrect assumption. Especially if you read on from that point, through sections 3 and 4, that seem to be saying that someone will only get in trouble for not providing the key if it can be proved beyond reasonable doubt that they do have it. In fact, sections 3 and 4 seem to be nothing
but safety nets to stop people getting in trouble over this regulation.
Oh, and I do wish people would stop scaremongering over a 'possible' situation. The government could 'possibly' send in an SAS team to kick down my door and hose me down with bullets and the only thing they'd have to worry about are the repercussions that come afterwards. You know, the same repercussions that they'd have to deal with when choosing to specifically enforce a law in as absurdly unjust manner as possible. Which, since the article you linked has failed to provide an example, I will assume
isn't happening.