The top 10 most sleep-deprived professions are:

* Company directors (averaging 5.9 hours of sleep a night)
* Ambulance crew/paramedics (6 hours)
* Tradesmen (6 hours)
* Leisure and hospitality workers (6 hours)
* Police officers (6.1 hours)

* Factory workers (6.2 hours)
* Nurses (6.3 hours)
* Engineers (6.3 hours)
* Doctors (6.4 hours)
* Civil servants (6.4 hours)