I remember the Jags on II (AC) Sqn using every last foot of runway at Laarbruch in 1979 to take off in summer. (Adour 102's with about 7,300 lbs in full reheat
then).
I don't know what engine thrust would have been by 1985 when Jags got later engines with a bit more oomph but I certainly would NOT like to have attempted to take off from Gib's runway at max war load at 30 degrees C........
The thought of a reheat blow-out and just CHAG as a stopping option would put most people off trying with even a light jet. I was never a Jag mate, though did get two back seat rides with D****k B****e and D**k S******r during a pre-BFTS hold, so other factors such as tyre limiting speeds, are a mystery. Always had a lot of RESPECT to those that flew them.
MB