Relevant person (Regulation 20)
Definition or reference in secondary legislation
The Health and Social Care Act 2008 (Regulated Activities) Regulations 2014, reg 20(7)

(7) In this regulation-- 'relevant person' means the service user or, in the following circumstances, a person lawfully acting on their behalf--
(a) on the death of the service user,
(b) where the service user is under 16 and not competent to make a decision in relation to their care or treatment, or
(c) where the service user is 16 or over and lacks capacity (as determined in accordance with sections 2 and 3 of the 2005 Act) in relation to the matter;
Definition
CQC Glossary of terms used in the guidance for providers and managers

In Regulation 20, "relevant person" means the person using the service or, in the following circumstances, a person lawfully acting on their behalf:
- When the person using the service dies.
- Where the person using a service is under 16 and not competent to make a decision in relation to their care or treatment, or
- Where the person using the service is 16 or over and lacks capacity to make decisions.