Hawker P.1127 (Kestrel) Hawker-Siddeley Kestrel and Harrier Mks 1-4. The Harrier 'Jump-Jet' is now a legend in the history of British Aviation. The most modern version of this classic jet is still in RAF service, but the original Harriers have long since been withdrawn. This latest Warpaint looks at the now retired Harrier Mks.1 to 4, plus the Hawker P.1127 and Kestrel research and trials aircraft that preceded them. The text adds new items of information to this well known story, and there is a large selection of excellent artworks and photographs. The layout conforms to the successful format used for so long by Warpaint.