A few years ago I arranged for the Air Wales DO228 to go into Shoreham with the idea of operating schedules to Cardiff, Why I mention this is that a large Insurance company which has offices in both places, a motor company with a plant in Bridgend and an IT company were all willing to GUARANTEE a certain number of passengers per flight. It would have covered the costs but the owner of the Company didn't want to do it.
It is just possible these guys have done their homework and such possibilities still exist, on its own it probably doesn't stand a snowballs chance of making a profit but I have long felt there are niche possibilities from Shoreham at the right price - a pretty high price.
Good luck!