Thanks for the advice guys, I got the HD channels showing okay (I re-scanned using the uk:Sheffield options) but then there was no channel name on a lot of the channels.
I restarted and then this happened,
It lost the connection to the DVB-T2 dongle, it did this before and I had to restore an old backup for OSMC that I had. Any advice on making it see the USB adaptor again, the DVB-T2 dongle plugs straight into the pi, but it won’t recognise it anymore.
Help!