This is a refugee from the' Anything but Injection' Group Build, that I was unable to finish on time. Briefly, the M20 was built by Miles as a fighter or fighter trainer using parts from the Miles Master and a Merlin complete with a cowling designed for the Beaufighter II and Lancaster. Two were built, the second as a possible shipboard fighter. As sufficient Spitfires and Hurricanes were available and production of both types was increasing, it was not placed into production.
The build and further details are here