OK - tried some obvious edits but none worked so I installed the lot!
So I appear to now have everything up and running in tvheadend , I can see the 6280(both tuners). I've given it a location and it shows the appropriate 7 mux signals (London CP on Freeview) at 100%. However, the 'Map DVB Services to channels' button is greyed out and doesn't do anything. The 'Muxes awaiting initial scan' is stuck on 7
As we say in UK - I've probably missed the bleedin' obvious'! Any help to progress much appreciated!