The UK has had total access to all communications networks in the UK since WW1.
Defence of the Realm Act 1914 gave vast new powers. HOW (Home Office Warrant) like use was expanded into the 1950's and beyond.
The UK had total mastery of all emerging telco sat systems in the 1960's, CSO Morwenstow/GCHQ Bude.
Irelands telco networks (domestic and all connections in and out) where all well understood.
As internet use, desktop crypto and mobile phone use became more common the UK had a few ideas about how to help with the creation of Government Technical Assistance Centre, later the NTAC (National Technical Assistance Centre).
All mobiles sold in the UK by default have been ready for intercept by design as set out in standards and international standards.
The use of early 1990's voice print technology and a new generation of cell site simulators have allowed the total collection of mobile calls all over UK cities for years.
Consumer grade computers with tame OS, weak default junk consumer grade crypto and expert malware have allowed any domestic computer system to be accessed by default over many years.
Networking anonymity is not an issues for the UK. The only real issues the UK has ever had with communications has been the Soviet Unions correct use of one time pads and number stations since the 1950's.
The SIGMOD initiative (sigint modernisation programme) has ensured the UK will never be without a total understanding of any type network in/out of the UK.
In the past years social media has been as open to courts as ever. OS developers ship the same standard of basic consumer grade protections with their desktop computers and seem as happy as ever to offer voice, keylogging, plain text and other access when requested by a UK court.
Mobile devices have always been and always will be open to any court request for all data, voice, location, images or telco network support to track, log.
Privacy is a useless concept when a UK court demands access in the UK on a UK network or any device sold, used or connected in the UK.
Any fancy imported crypto app layer is reduced to junk with keystrokes or voice been recorded by malware at a hardware or tame lower software/network/OS level.
The same level of access to text and calls will always exist on public/private networks thanks to international standards and all devices sold been intercept ready by design.
OS, networks, social media, telcos will never be a problem in real time for the UK.