The Working Time Regulations
Maybe I have read the linked document wrongly then, but (and I hadn't read your link)I thought that the regs only applied to non mobile workers...but you are at the sharp end so I defer to your knowledge.
I know that we had this legislation preached at us, times without number when it came in(and of course I was working) so I had to know it...being out of circulation for 10 years has meant I could kiss it goodbye.......but it awakened some powerful (not good) memories for me.