Mode S traffic alert
Well here is a thought. As NATS charge a stupid fee for what amounts to a data feed for a computer to display a radar image, how about a mode S receiver for the control tower. This could snoop on the mode s replies from aircraft with a suitable transponder and produce an alert if they were conflicting. As an alternative I wonder if NATS could have a link to shoreham and instead of sending a radar image, just send conflict alerts. If a suitable threshold for these could be set then the tower would get an alert if a dangerous situation was developing. As this was not displaying a radar image I would imagine that it would not need a radar qualified controller and would enhance safety.