I've seen the latest thread on cutting, and read pavingexpert, but do
the assembled company have any other views / gotchas etc on these products?

I am currently replacing a patio and had been going to use "good
quality" concrete slabs, but my local builders merchant has a range of
products from digbystone which look quite nice, and the SO fancies the
riven sandstone. Laying on screed on a concrete sub-base with rebar.

Going off at a tangent, I find it interesting that in the 19th century
slate from Wales and ironmongery from the black country went all over
the Empire. Now, we are importing stone and well-made "traditional"
brass castings like door handles from India.