In order to change the registration for shares registered to U.K. shareholders of Millennium Chemicals, Inc., or Lyondell Chemical Co., please submit the following:

• The original stock certificate(s) referenced above. In the event your shares are lost and/or not in your possession, kindly notify our Lost Security Department, in writing, to 6201 15th Avenue, Brooklyn, NY 11219 or log onto the account through our internet web site.
• A Certified copy of the Certificate of Appointment of the Estate Representative, dated within 60 days of the transfer. The term "Certified" means the document has an original signature with a raised seal affixed by the court.
• A court certified copy of the Will.
• A properly executed Affidavit of Domicile (certified by a Solicitor or Commissioner for Oaths).
• Federal Transfer Certificate (obtainable from the Estate Tax Group, Internal Revenue Service, Assistant Commissioner International, 950 L’Enfant Plaza S W, Washington D.C. 20024 USA) Or an executed Affidavit by the Estate Representative stating that the deceased was neither a citizen nor a resident of the United States at the time of death and that: a) death occurred on or after January 1, 1977 and; b) on the date of death the gross estate situated in the United States was not in excess of $60,000.00 (if death occurred before January 1, 1977 and after November 14, 1966 the amount is $30,000.00. or the amount is $2,000.00 if death occurred prior to November 1966).
• The signature(s) of the assignor(s) must be guaranteed by an eligible guarantor institution (a Commercial Bank or Trust Company).
• The name, complete address, including zip code and Tax ID (utilize Form W-9 if the beneficial owner is a citizen of the United States or Form W-8BEN if the beneficial owner is of Foreign Status) of the new registration.

Please submit all documentation to 6201 15th Avenue, Brooklyn, NY 11219, USA, Attention Transfer Department. We suggest you use Registered or Certified Mail, Return Receipt Requested.

If you wish to insure your securities against mail loss, you should insure them for 2% of their market value since this would be the cost to replace them.

You may communicate with us by phone at 0800-849-8071(UK residents), or at 1877-248-6422(US residents), or by transacting on this website.