16It is not an offence under section 22(1) (restriction on days of supply of fireworks) for a person to supply a firework contrary to section 22(3) if the firework is supplied to a person who is employed by a business engaged in, or whose trade or business (or part of whose trade or business) is, the supply of fireworks in accordance with the provisions of the Pyrotechnic Articles (Safety) Regulations 2015.