F wrote:

Next stage: a metal (stainless steel?) handrail is being requested. Any
pitfalls other than being cold to the touch? And any recommendations for
suppliers/manufacturers?

I'm currently looking at q-railings (.co.uk I think) for a stainless
handrail and glass balustrade, you have to register for a trade account
to see pricing which takes a day or two ... there seem to be plenty of
fabricators doing bespoke work on eBay based on their hardware