One recent discovery/conversion for me is Flexishield cable.
An obvious use-case is for cables in walls where you don't want RCD protection, but you want something a lot easier to wrangle than SWA. Another is for cables clipped on walls where you might have rats, etc, and so PVC T&E or rubber is not good, as they don't seem to like Flexishield. They even make a cat-urine flavoured version of it for really problematic areas (farms, etc)
Flexishield R How It Works
www.flexcables.co.uk
But the normal stuff is good for many industrial/commercial applications as it looks fairly neat if clipped to walls and is stiff-ish so stays in place. It is similar to FP cable but really rated for nail penetration RCD trip action.