Governing document
MEMORANDUM AND ARTICLES OF ASSOCIATION INCORPORATED 16 JUNE 1976 AS AMENDED 26 NOVEMBER 1976, 12 JANUARY 1977, 27 NOVEMBER 2001, 4 APRIL 2002, 21 SEPTEMBER 2004, 19 SEPTEMBER 2006 AND 18 SEPTEMBER 2007 AND AMENDED BY SCHEME 1 APRIL 2009.