MaxAOB-<A window and a horizon is not enough!!!! Your post beggars belief. How do you think vfr flying is taught. I am sure you are aware of Beagles credentials and if he says it was 40 degrees then it was probably somewhere in the region of 39 -41 degrees! >
My opinion is 'piffle'. We are not talking about the front window, but someone sitting in a cabin looking out of a small oval window at a wing and a (possible dodgy) horizon and estimating a bank angle, in a possibly unfamiliar aeroplane? Purrlease- I wouldn't try it myself!
We may rest assured that <some suggestion that there was a fairly heavy airprox over Dulwich.....> REALLY = "I was having a quiet fag in my garden and I tort I taw a Puddy Cat (sorry, 2 aeroplanes rather close)". Maybe the fag was one of those funny ones, but no incident whatsoever took place, so why are we wasting 3 pages on this garbage?