This has been / is facinating stuff. I think there will be as much fallout from this episode as the volcano produced.
BAW flights refused landing permission are presently showing on my box as BAW84 holding between IOM and NI Coastline, BAW 17V, 284 and 274 holding Shannon area, BAW 9120 and 206 were holding Landsend possibly now headed shannon and BAW102 is headed south again.
John