# Greater London Authority Act 1999, Paragraph 8


(1) A person shall not, by virtue of being Deputy Mayor,—
(a) become the acting Mayor, or
(b) exercise any functions by virtue of paragraph 5 above,
unless and until he has made, and delivered to the proper officer of the Authority within the permitted period, a declaration of acceptance in a form prescribed in an order made by the Secretary of State.
(2) In sub-paragraph (1) above, “permitted period” has the same meaning as in paragraph 4 above.
(3) Subsections (3) and (4) of section 28 of this Act shall apply to a declaration under sub-paragraph (1) above as they apply to a declaration under that section.

---
Source: https://www.legislation.gov.uk/ukpga/1999/29/schedule/4/paragraph/8 (the official version)
Page: https://openlegislation.uk/greater-london-authority-act-1999/schedule-4/paragraph-8
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.