Yes, as long as you have at least 12 weeks’ service in the same role with the same hirer. You are entitled to 'reasonable' time off, which should include travel time there and back, waiting time and time spent at the class. You cannot be asked to make up the time or to use your annual leave.
The appointment must have been made on the advice of a GP or midwife and except for the first appointment, you can be asked to provide written evidence that you are pregnant and of the appointment.
Antenatal care can include, for example, medical examinations, midwife appointments, antenatal classes, relaxation and parent craft classes.