These excerpts taken from the BP 6-K filed May 22, 2008.
Restriction of the effect of these Articles on uncertificated shares
19 Subject to the Directors power to determine that any shares in the Company shall cease to be held and transferred as uncertificated shares, the provisions of these Articles shall not apply to any shares held as uncertificated shares to the extent that such provisions are inconsistent with:
(i) the holding of such shares as uncertificated shares;
(ii) the transfer of title to such shares by means of a relevant system; or
(iii) any provision of the Uncertificated Securities Regulations 2001.