As an employer, you must appoint someone competent to help you meet your health and safety duties. A competent person is someone with the necessary skills, knowledge and experience to manage health and safety.
You could appoint (one or a combination of):
You probably manage most aspects of your business yourself, or with the help of your staff. But if you are not confident of your ability to manage all health and safety in-house, you may need some external help or advice.