Hi @olivermccartney,
Welcome to the Bunnings Workshop community, it is wonderful to have you with us.
In order for us to assist, we're going to need a bit more information about the location of the leak. Is it leaking from the shower head itself, or from the base where it attaches to the wall?
If you have any photos showing the location of the leak, this would also greatly help us. Let me know if you need a hand uploading images.
Once you can provide a few extra details, we'll be happy to help.
Jacob
