From the comments (credit to http://www.ktetch.co.uk/p/about-me.html):
"Funny thing about the RIPA act was that in 1999, when the act was first discussed, civil Liberties group Stand decided to show the problem.
They sent an email to the Home Secretary (the minister for law and justice) containing a confession (source http://www.zdnet.com/surveillance-straw-petitioned-on-commer... ). That confession was encrypted. Mr Straw had details to a crime in his posession, in an encypted file, and no way to decrypt it. He was, under the letter of the law, refusing to decrypt information relevent to a crime, and should therefore be charged under RIPA.
Guess who wasn’t charged? Yes, the law doesn’t actually apply to you is you’re the Home Secretary. Who knew that those in government consider themselves above the laws they inflict on others."