your not alone,loads of channels missing in some areas vm have added 16 new tps,that means more downtime while kv do the shifting,try a factory reset as just heard more came back for the 780.
mines the same here in preston area lost itv2 and +1 and a few others how do u know what net id to select as there is 3 prestons to choose from after i do a system reset? t.i.a