Secure messaging apps have grown in popularity as consumers seek protection from hackers and surveillance, but end-to-end encryption faces an uncertain future in the UK.

Home secretary Amber Rudd has called for technology companies to build back doors into their encrypted content for security services to use when they require access in the fight against terrorism. And prime minister Theresa May talked at the World Economic Forum summit in Davos, Switzerland about the need for a balance between privacy and security – in short, undermining the security of encrypted messaging apps.