Martin Brown wrote:

Building regs approved document K has chapter and verse on steps:
https://assets.publishing.service.go..._AD_K_2013.pdf

Thanks for the link but the document is tricky to read on my desktop screen
as the left-hand edge of the text is masked by the menu and I can't see how
to minimise it. Changing the zoom setting only reveals the entire width of
the text once it's reached too small a size make out. I'll persevere.