A company may only make a market purchase of its own shares if the purchase has first been authorised by a resolution of the company.
That authority—
The authority must—
The authority may be varied, revoked or from time to time renewed by a resolution of the company.
A resolution conferring, varying or renewing authority must specify a date on which it is to expire, which must not be later than five years after the date on which the resolution is passed.
A company may make a purchase of its own shares after the expiry of the time limit specified if—
A resolution to confer or vary authority under this section may determine either or both the maximum and minimum price for purchase by—
Chapter 3 of Part 3 (resolutions affecting a company's constitution) applies to a resolution under this section.