OK, WTF?
As someone correctly said (and was ignored): those are Hawks. Specifically, those are the Red Arrows.
As for the Napier Sabre engine, when I worked at the IWM in Duxford we restored a cut-away version of one. Flat-H 24, sleeve valves (look great, spit out more oil than a ****el engine), 36.5 litres, 3055bhp at 1500rpm. And that is NOT a typo. Every other tw*t coming through would make the same "joke": "That would look great under the bonnet of my/your car!" Listen you idiot, it's six feet long and five feet tall, so you couldn't see around it - even if it fitted. It weighs just over a ton, so goodbye suspension. And when you put your foot down the torque would turn your car over. G*d I got sick of that...
M