I do not know why everybody is being so rude about the Vampire T11. Six hundred of them trained an awful lot of pilots and they didn't lose many compared with the Meteor T7. I had a very pleasant time with them. Why have a searing take off performance when you leave 1,000 yards of runway untouched.
I can still remember circling over London at FL 320 on a gin clear night seeing the lights from Birmingham to the Channel in the days when civil ATC stopped at 290.