The UK Government wants ISP’s to record secure transmission of messages with services like Facebook and Gmail, which are currently using SSL. I’d be curious to know how the UK government actually plans to pull this off. To pull that off they’d need to get browsers to include their root certificate so they can MITM Gmail and Facebook. I can’t see that happening.
Of course anyone really wanting to do something criminal will just employ a VPN to tunnel past these ISP’s, or encrypt messages using GPG. Therefore, I don’t see what the point is.