Backdoor'd products and services assured before release to the UK.
https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/504234/Interception_draft_code_of_practice.PDF
8.28 CSPs subject to a technical capability notice must notify the Government of new products
and services in advance of their launch, in order to allow consideration of whether it is
necessary and proportionate to require the CSP to provide a technical capability on the
new service.