Stuart
you may well be onto something about the 'volunteers', this a quote from the guide to the Working Time Regulations: -
A worker is:
someone who has a contract of employment, or someone who is paid a regular salary or wage and works for an organisation, business or individual. Their employer normally provides the worker with work, controls when and how the work is done, supplies them with tools and other equipment, and pays tax and National Insurance contributions. This includes part-time and temporary workers and the majority of agency workers and freelancers.
RDS firefighters are clearly subject to a contract of employment, but what about volunteers? is there any contractural basis for their contribution to the F&RS?
the question arising as to whether RDS employees would become unpaid volunteers looks like the start of another topic for discussion!