On graduating from basic flying training in the BAC Jet Provost, students streamed for fast jet training during the mid-1960s would probably find themselves in the front seat of a Folland Gnat and a very different flying experience. Something of a ‘hot ship’ the Gnat was fast, responsive and highly manoeuvrable, with excellent visibility from his position. In the relatively cramped cockpit of this jet trainer, however, conditions for the instructor in the rear seat could not be described as being quite so pleasurable.