Every holder of an on-licence, off-licence or a club licence (and in some circumstances, a special licence) must appoint a certified manager.
Under the Sale and Supply of Alcohol Act 2012, a manager must be 20 years or older and must hold the prescribed qualification (which currently is a Licence Controllers Qualification, LCQ), which covers knowledge of the Act and host responsibility requirements. You must also have current experience in the industry of at least three to six months.