sasha wrote:
Are the Working Time Regulations not law then
Are employees entitled to 11 hours rest per 24 or not ?

?
An employee is quite legally able to op out of the working time directive, but should not be penalised for not wanting to opt out.
There are some industries that an employee can't opt out of the WTD.
Workers who can’t opt out
Employers must not allow the following staff to opt out:
workers on ships or boats
airline staff
workers in the road transport industry, eg delivery drivers (except for drivers of vehicles under 3.5 tonnes using GB Domestic drivers’ hours rules)
other staff who travel in and operate vehicles covered by EU rules on drivers’ hours, eg bus conductors
security guards on a vehicle carrying high-value goods