Had one ride in a Swift Mk5 (tail No 903) at BD 29 Nov 1957.
Unhappily cancelled AB after take off and was surprised how it climbed like a lead sled. Cannot recall its characteristics going supersonic.
Understand the straight wing Swift had BAD pitch up, as did the early Hunters until the introduction of the cranked wings. My first experience of pitch up was in a Hunter on the top of a loop. Fell out of the loop somehow with the stick against the forward stop to no avail. Didn't try for a pitch up in the Swift as I believed the cranked wings had corrected the problem.
Wonder what happened to 903 and what were the peculiar letters that went before the number?