Sadly no Harts fly at the moment. There are however two Hawker Nimrods and this Hawker Demon airworthy. [link] Soon we will have a Fury too. The silver interwar biplanes are some of my favourite aircraft. The crackle of their Rolls Royce Kestrel is one of the greatest sounds in aviation. It's up there with the Mustang gun port whistle and the Vulcan howl.