No doubt the UK authorities were firmly at panic stations (evacuating a golf course - that's just hilarious!) but no one seemed unduly concerned on board if they blithely flew 2 hrs from Czechoslovakia to Scotland and passing over Stansted en route - plus no doubt several other similarly designated airfields in Europe.
It doesn't exactly sound like a high-level threat does it?
Which makes the golf -course business seem even more idiotic, but I suppose the police have to find something theatrically dramatic to do instead of just standing around in crowds like spare parts.