If you are an employee or agency worker, who has a qualifying relationship with the pregnant woman or her expectant child, you can take unpaid time off work to accompany her to up to two antenatal appointments. These should last no more than 6 ½ hours for each appointment, and this should cover your travelling, waiting and attendance.
If you are an employee this is a “day one” right.
If you work for an agency, you must have been doing the same job for at least 12 weeks, with the same hirer and there must not be any breaks between your assignments.
From 1st October 2014, if you are an employee or agency worker, taking time off to accompany a pregnant woman to an antenatal appointment, you will be protected from being subject to any detriment. This is any act, or deliberate failure to act, because you take leave for antenatal appointments. Examples include you being denied promotion or job opportunities or otherwise being disadvantaged for asking for this time off. It also includes your right not to be unfairly dismissed.