@McDick
I believe Freeview Play is only supported on a RokuTV, as opposed to a Roku streaming player or stick.
https://support.roku.com/en-gb/article/360038618573 (How do I use Freeview Play on my Roku TV™?)
Roku Community Streaming Expert
Just another Roku user... I am not a Roku employee.
Insignia RokuTV, Ultra 4660, Premiere+ 3921, Express 4k+ 3941, Streambar 9102