"Chair Rachel Reeves -
She also asked for information on when driver hour limits would be introduced in the UK, and what those limits would be, per day and per week, per driver."
They were introduced sometime in the 1930s and are known as 'The Domestic Regulations' and apply to all commercial/business vehicle driving not governed by the National Regulations which are derived from EU law. I cannot readily quote them as it is the best part of 30 years since I last had occasion to look at them but anybody using a vehicle for business related purposes - not leisure or domestic - who is not subject to the National Regulations is subject to the Domestic Regulations.
In any case is there not more recent regulation, again descending from EU law, on the subject of maximum hours working regulations ?