AirScream,
I believe it's run by the Ops Manager of Channel Express, who can be found via the UKOMA website, and runs 2 or 3 times a year subject to demand.
But are you sure you want to spend money training to enter an industry in economic freefall? It's a bit like someone in 1939 blowing their life savings on setting up a company offering tranquil walking holidays in the peaceful rural setting of western Poland!!!
TicketyBoo.