Super Hawk
It was actually very common to go supersonic in the Hawk.
Back when I was a student on 208 Sqn (2002) it was a standard part of the student night flying syllabus. We would climb to 45000’, roll inverted and point out towards the Irish Sea until the CSI said M1.0.
There were some interesting handling characteristics to be aware of but nothing scary.
I was never a Hawk T1 air test pilot but I was (am) on the Hawk T2. I can’t vouch for the T1 test schedule but I can say that on the T2 the idea is to get close to, but not exceed, the Mach.
I also remember a load of screen grabs on the wall in the Ops room at 419 Sqn (CFB Cold Lake) showing that a Hawk 115 had comfortably exceeded the Mach. I can’t remember exactly how much by though.
So, these things happen (accidental boomers) and yes the Hawk can do it but you need to try quite hard!
BV