We will not stop you from using a personal music device whilst participating, but we strongly recommend that you do not.
It is important that you are able to hear what is happening around you, including any emergency services that may be operating. Please note that you will be held strictly and solely liable if found to be responsible for harm to yourself or any third party, as a result of wearing a personal music-playing device.
However, we do recommend the earphones with bone conduction technology that allow the wearer to listen to music while still being aware of their surroundings.