Gromit, This is not discrimination. Lifesavers practice in clothing for very good reasons and perhaps if this lady had the appropriate qualifications she'd be welcome to train as a lifesaver when the pool is closed to the public, which is when training takes place. However, she would not be allowed to work with the public when fully dressed, just as male lifesavers are not allowed to do their jobs in, what the authorities deem to be, inappropriate clothing. If the rules were changed to accommodate her, I wonder where it would end? Would people who are embarrassed by their bodies claim the right to swim covered from head to foot too?
Have a look at this.
http://www.cambridgemuslims.info/services/Ladi esSwimming/
It's a Muslim women's swimming club and the rules say that non-Muslim women are welcome, but they must cover to the knee. Seems everyone has their rules, and everyone is expected to abide by the rules.