Danny passed away 8 years ago? it has been a long time.
Regarding IFR flights, i believe the tower liase with BHX before departure and when airbourne, it's straight to BHX 118.05, remain outside of controlled airspace and a sqwk.
The Dornier 328 was going to route GLA-WBA-LCY and BFS-WBA-AMS? strange hey?
The Dornier 328 of ScotAir did come in once or twice and just got in, bearing in mind, no pax. It will always be Halfpenny Green to me!