Rotor Tree, methinks that you're being a tad unfair to the fast jet fraternity. Unlike the rotary winged fraternity, the GR4 needs a fair length of concrete to do its air-ground-air transition stuff and what has Northolt got? Not having access to a BINA, my recollection is of about a 5,500 ft runway which, without a cable, is VERY limiting i.e. Vstop will be VERY small. Also, what about the noise. GR4 in max reheat isn't exactly stage 3 compliant. Northolt Ops would have been able to plot his departure on the noise complaints alone!
I'll wager that Northolt were most grateful for something different at their families day and all credit to the crew who took it there.