advocatusDIABOLI: I have not heard of, or experienced, surge at any speed or altitude with a Derwent, it just kept going regardless of how it was treated, or for that matter, mistreated.
I never forced a Meteor to an out of control in compressibility stage, though I did witness it once
I was cruising northbound in the middle of England at about 35,000ft when I saw a gleam up high in my 11 o"clock, it was a Mk 8 tipping in on me on a high quarter.
He started to flick just as I lost sight of him in my 7 o"clock, and was still flicking completely out of control when he reappeared at about my 5 o"clock.
The silly bugger disappeared into the cloud tops, which were at about 25,000ft, and I didn't see any report of an accident next day so I presume he recovered.