Any Freeview licensed TV that allows recordings to be made will need to encrypt those recordings using something like DTCP or similar. It's a requirement of the Freeview licensing these days. This encryption should tie those recordings to the device that made them.
How long has that been a thing? I know that I can transfer files from a LOGIK (Curry's own brand) small bedroom TV that I got in 2015 to my PC. Software such as Handbrake doesn't like them "file table incorrect for video format" (or something like that) but they play just fine in Windows Media Player or VLC.