TE583 fitted with two Sapphire jet turbine engines [Numbers 1 & 4] outer nacelles, this aircraft was the second prototype and was evaluated for trials for the new HP Victor V-Bomber, its life thereafter was for various research institutes especially the RRE
TG499 had a huge paratechnicon fitted under the fuselage, I do have a picture but it is under copyright, it makes the aircraft look ungainly
On the 26th September 1949 the paratechnicon detached itself from the aircraft, this hit the tail, the aircraft lost control and crashed at Beacon Hill in Wiltshire
G-AGSS looks like a Hastings but isn't, it was a HP Hermes which was longer than a Hastings, G-AGSS crashed on its maiden flight shortly after takeoff on 2 December 1945. Handley Page's chief test pilot and the chief test observer were both killed, literally it looked like a Hastings with a tail wheel