The surprising thing is that BA Cityflyer doesn't use the Embraer sitting in Madrid for a few hours each day between the am and Pm MAD-LCY-MAD rotations to run a MAD-GIB rotation. As BA with an Iberia codeshare and a through flight from LCY to GIB, it should be the least risk way of running the route and least cost also, since the aircraft is presently unused.