I ran a magnet over all the lower sections and Header rail and good solid metal, no doubt it will have been repaired to some of these area's though and I can't really go stripping things down to look under rubber seals, etc!
I took my car in for the M.O.T. Re-test this morning and got a pass

Both Back brakes perfectly in balance now and I even adjusted the nearside headlamp correctly

I was worried I may have a faulty brake drum (Cracked) but obviously not.
Took the car into work to celebrate too, and was in good company with a lovely Fiat 850 Coupe in the works car park
Will arrange to collect the Hardtop sometime over Easter subject to it fitting correctly, photo's to follow.
Regards
Gary