Arthur Ord-Hume built a cabin fuselage for his original Minor G-AFIR in 1959 and test flew it 6 times at Panshanger. he then reverted the fuselage of G-AFIR to the original. Subsequently, the finished cabin version became G-ARIF, the O-H7 Coupe, the fuselage of which is shown here.
Others have tried a cabin Minor - more to come on this soon!