Changes to Non-Domestic Rating (Appropriate Fraction and Rateable Values) 1991
S.I. 1991/2924
Made by British Waterways Board and Telecommunications Industry (Rateable Values) 1994
1 change. All changes to Non-Domestic Rating (Appropriate Fraction and Rateable Values) 1991
From legislation.gov.uk's record of changes, the official one: see it there.