The Aviation Division underlying earnings (EBITDA) were £1.4m in 2015 compared with £0.1m in 2014 on revenues of 23.6m and 20.3m respectively. I doubt that CAX contributed much to that. "Passenger related" revenue increased by 22%.
They mention that "We are seeing interest from a number of large European operators who consider London Southend a very attractive option to serve the London market." Seeing interest is one thing but turning that into aircraft on the ground is much more difficult of course. Time will tell.