R v A, B, D & C [2021] EWCA Crim 128

“The issue on the appeal was whether communications obtained by the French authorities from the EncroChat secure communication system and then supplied by the French to UK law enforcement were properly admissible in criminal proceedings in England and Wales or were excluded by the provisions of the Investigatory Powers Act 2016. The background was that, from around 2016 onwards, there had developed within international law enforcement a consensus that EncroChat was being used exclusively by criminals as a secure, encrypted means of communication …”

ADDED Wednesday 31st March 2021