I've now finished work on the mirror, and it's now installed on an external wall, reducing the amount of visible brickwork in the garden and reflecting light onto a lemon tree. It's mounted on a wooden frame, with the mirror itself being held away from the wall; previously, a plastic mirror was in this spot and failed quickly due to the silvering not coping with moisture that sometimes runs down the face of the wall in heavy rain.
There's another plastic one to the left (visible in the first photo, giving rise to the 'bent' reflection). The glass mirror I've made reflects light 'straight', whereas the plastic mirrors didn't sit 'flat', giving a reflection not wholly unlike the hall of mirrors in a funfair! (If using them again I would mount them on very solid board, to try to stop them bending.)
In low light the colour plating picks up the light from the sky; who says you can't have colour in your garden all year round?
The plan is to make another similar mirror to fit the wall to the left, turning a corner of the garden into a mini-light box.
I've also completed the soldering and recementing work on the panel I picked up at a reclamation yard: this would ideal to add a bit of decoration to a uPVC window or conservatory. I'm putting it on sale, initially in newspapers and on the internet.