The potential of SEN to capture a chunk of the London catchment is great and should put the fearof god into London City airport who pride themselves on ripping everyone off as there is no other option for east Londoners/Essex catchments.
That's really not the case. There are only a smattering of "sun" routes at LCY and they are not really in the same space as SEN are going for. I think you are comparing apples and pears by looking to LCY, they are really more going after the STN model.