“isolation” in relation to a person means the separation of that person from any other person in in such a manner as to prevent infection or contamination (with Coronavirus)— 

(a) at a facility designated, by notice published on www.gov.uk, for the purposes of these Regulations by the Secretary of State; 

(b) in that person’s home; 

(c) in a hospital; or 

(d) at another suitable place; 

“medical officer” means a registered medical practitioner designated for the purposes of these Regulations by the Secretary of State; 

“Public Health England” means the executive agency of that name of the Department of Health and Social Care; 

“public health officer” means a registered public health consultant or a person working within Public Health England under the oversight of a registered public health consultant; 

“registered public health consultant” means a professionally registered public health consultant working within Public Health England; 

“responsible adult” means, in relation to a child, a person with parental responsibility for the child (within the meaning of the Children Act 1989) or a person who has custody or charge of the child for the time being; and 

“screening requirements” means the requirements set out in regulation 6(1). 

(2) In these Regulations, a reference to infection or contamination( a ), however expressed, is a reference to infection or contamination with Coronavirus, and related expressions are to be construed accordingly. 

(3) The notice referred to in the definition of “infected area” and “isolation” in paragraph (1) must be followed by publication of the notice in the London Gazette as soon as reasonably practicable. 

## Serious and imminent threat declaration 

3. —(1) These Regulations apply where the Secretary of State declares, by notice published on www.gov.uk, that the incidence or transmission of Coronavirus constitutes a serious and imminent threat to public health, and that the incidence or transmission of Coronavirus is at such a point that the measures outlined in these Regulations may reasonably be considered as an effective means of preventing the further, significant transmission of Coronavirus (“serious and imminent threat declaration”). 

(2) The Secretary of State may revoke a serious and imminent threat declaration by way of a subsequent notice published on www.gov.uk. 

(3) Before making a declaration under paragraph (1), or revoking a declaration under paragraph (2), the Secretary of State must have due regard to any advice from the Chief Medical Officer or one of the Deputy Chief Medical Officers of the Department of Health and Social Care. 

(4) The publication of a notice under paragraph (2) does not affect the validity of any steps taken pursuant to these Regulations before the notice is published. 

(5) A notice published under paragraph (1) or (2) must be followed by publication of the notice in the London Gazette as soon as reasonably practicable. 

## Detention of persons by the Secretary of State or a registered public health consultant 

4. —(1) Where Condition A or B is met in relation to a person (“P”), the Secretary of State or a registered public health consultant may, for the purposes of screening, assessment and the 

