Aircraft part ID

Thanks AM. My leaning towards a Boulton Paul bracket is the tubular cross bar clamps similar to the mid upper in a Halifax, as for mounting a gunsight I’m thinking that the single hole is the attaching point as per the FN types that hold the clamp around the neck of the reflector sight and then via a single bolt onto the bracket.

It may not be from a turret but the lightweight cast alloy construction does seem to indicate that it might suit an aircraft.

Not Frazer Nash and not B.P. Not the ones I’m familiar with anyway.

To be honest, I’m struggling to see how you would attach a gun sight to it?

Could it be Defiant?

I think so and electrical equipment too I think during WW2. I’m starting to suspect Boulton Paul as it doesn’t look like anything Frazer Nash would use.

Belling & Lee..the cooker makers?
Seems they did produce aircraft parts during WWII..