I can remember seeing this production when it was aired back in 1972. At the time I had not read any of GMF's McAuslan stories, but having since done so I can say that the BBC did a first rate adaptation.
The production caught the humour of Fraser's story and it was very well put together. The scenes where Lt. McNeil imagines disasters happening were filmed using fish-eye lenses, giving a distorted image and was brilliantly done.
John Standing was excellent as McNeil, as was Freddie Earle as McAuslan and I really enjoyed Alan Cuthbertson in a rare comedy role as the Colonel.
I would like to think the BBC still has a copy of this and that there is a chance of a repeat, but I'm not holding my breath!