Re. The opening line 'R.A.F buys spylanes to monitor the enemy' - well what the hell use else are they for, flying over nudist beaches ?!
My only wonder is recent comments about lightly built carbon composite structures in high temperature environments - and no, I dont' want or expect any details here.
As for the 'pee tube,' isn't that a part of the pilot's kit from quite a while back ?
No answer expected there either, I've heard of the very unpleasant results of using fuselage built-in devices at cold high altitudes !