Rule 91 of The Highway Code is sound advice especially for us long distance riders but it is not a legal requirement. Prison sentences if you don't get sufficient sleep, come on that's just as fake as fake news gets!
Shame on you Jon Macpherson you should know better!
In the Selby rail crash of 28 February 2001, Hart got five years for the deaths of ten people when he drove off the Mway. He was in a sleep deprived state. It transpired he stayed up the previous night talking to a woman.