There have been 'Freeview+' devices available for many years. (They're set-top boxes for Freeview with a built-in recording facility). e.g.
https://www.johnlewis.com/panasonic-dmr-hwt130-smart-500gb-freeview-hd-twin-recorder/p3306391 .
(Note that, just like old VCR videoptape machines, you still need to tell the box which programmes you want to record. It won't record all of Freeview's output!)
However they've largely been replaced these days by 'Freeview Play' set-top boxes, which are the same type of thing but which use home wifi to add in 'play on demand' catch-up TV as well. e.g.
https://www.freeview.co.uk/freeview-play/products/panasonic-dmr-hwt250eb
(You still can't watch
every Freeview channel at a later time though. You can record specific programmes to the box's hard drive or you can watch any of those channels which offer a streamed 'catch up' service; not all do).