Another thought on the Stornoway Wick route. From what I have seen Eastern Airways operate a 3 seater plane and Ryan operates a real aeroplane with lots of seats and a toilet.
Eastern do not fly from Wick to Stornoway only ABerdeen to Wick and Aberdeen to Stornoway on a J41 the same as that operate from Teesside to ABerdeen 4 times a day with a load factor a damn sight better than Ryanair can manage. It also has a toilet and 29 seats.