In message <4C47D72B-8A25-4CFE-AF61-B7347F726579@ripe.net>, at 12:32:33 on Thu, 16 Feb 2017, Chris Buckridge <chrisb@ripe.net> writes
LEA interest in reducing the use of CGN also came up for discussion at the recent RIPE NCC Roundtable Meeting for Governments and Regulators (held in Brussels on 24 January)
The UK's approach, as expressed in the 2016 IP[1] Act, is not to prohibit CGN, but require operators to log who was using which IP, when. This is exactly the same as when Internet access was primarily by dial-up to banks of modems, and customers shared the IP Address of the modem. The ISPs were expected to log who had been online at a specific IP address at a specific time. [1] Investigatory Powers, not Internet Protocol. -- Roland Perry