Bazy,

Googled earlier and found the same information. I’m inclined to think it is Elliots of Newbury but still confused as none of the official documentation I have states they built anything other than tailplane parts (and rudders only if the engineering notes are to be believed) and yet I’ve found an E of N stamp on several cockpit parts and clearly stencilled on the side of one being assembled in a photo.

Curious stuff.