There is no minimum age for most body piercings but performing genital or nipple piercing on someone under the age of 16 could be considered an offence.
In order to be able to carry out the piercing procedure a licence is required. Many local authorities set an age limit of 16 years old as a condition of the licence.
Most local councils keep registers of approved piercers who have passed hygiene and safety standards and who are regularly inspected by health and safety officers. A copy of this licence must be displayed in a prominent place on the premises.
See the link in Related Information to find your local authority.