629. Power of limited company to purchase own shares
(1) A limited company having a share capital may purchase its own shares (including any redeemable shares), subject to-
(a) the following provisions of this Chapter, and
(b) any restriction or prohibition in the company’s articles.
(2) A limited company may not purchase its own shares if as a result of the purchase there would no longer be any issued shares of the company other than redeemable shares or shares held as treasury shares.