For the purposes of section 53(4B) of the Act, the period within which a person shown in the initial notice as the approver (“ Section 53(4A) was inserted by section 52(1) of the Building Safety Act 2022 (c. 30). For the purposes of section 53(4C) of the Act, the period within which P is required to give information to the person carrying out or intending to carry out the work (“ 21 calendar days beginning with the date on which the local authority gave P a notice under section 53(4A), or in relation to information requested by C pursuant to section 53(4C)(c), 21 calendar days beginning with the date on which C gives P a notice under section 53(4C)(c).