Still missing the point. The airport would not have been quoted as saying that "On this occasion Nats were unable to provide staffing cover beyond our closing time" if it was the airport that was unable to stay open, or do we have proof that it was BAA who refused the flight? I don't think it was ever actually alleged that the situation involved an in-flight diversion, but the time taken to refile, organise handling at the new destination, plus the extra road ambulance journey time back to Southampton all adds up at a critical time. I believe there were delays in getting the ambulance to Bournemouth too.
I have never refused to stay on beyond the end of a shift, unpaid, to ensure a Cat A flight has been handled safely and quickly - and I hope I would never have to.