​​​​​​​​​Under the Smokefree (Premises and Enforcement) Regulations 2006 nearly all public places and work places that are enclosed or substantially enclosed had to be smoke-free from 2007.
​​​​​Dan Reoliadau (Mangreoedd etc) Di Fwg 2006 roedd yn rhaid i bob man cyhoeddus a phob gweithle sy'n gaeedig neu'n rhannol gaeedig fod yn ddi-fwg o 2007.