W.1X non-airworthy engine unofficially became the first British turbojet to be airborne when the E.28/39 made short, straight hops. The W.1 flew officially in the E.28/39 on May 15, 1941.
By: Tech Planet Title: FATHER of Jet Engines!? - Whittle W.1X Sourced From: www.youtube.com/watch?v=lTdA0iq0H5A