No more FaceTime and iMessage in the United Kingdom. This is likely to happen if the UK does not amend the Investigatory Powers Act (IPA) 2016 which requires app security systems to get permission from the UK Home Office before they can be used by the public.
Among those subject to the UK Home Office's jurisdiction is turning off certain security systems used in existing applications. In other words it creates a back door that can be used to spy on the activities of UK residents. The UK government previously requested that end-to-end encryption systems be deactivated on messaging apps for national security reasons and to prevent child pornography.
Apple says allowing the UK access to the backdoor has a significant impact on the privacy rights of its app users. With this Apple joins WhatsApp and Signal who also oppose the act which is seen to have a big impact on the privacy of users on keeping them safe from terrorists and criminals.
A few years ago, Apple refused to provide assistance to the FBI who wanted to access the contents of the iPhone 5C belonging to terrorists in the San Bernadino shooting incident. Device data is encrypted through the Touch ID system. Apple said they could not provide access to the FBI even after receiving a court order because doing so would have an impact on all their users.