The Occupational Pensions (Revaluation) Order 1986
Section 52A of the Social Security Pensions Act 1975 (inserted by section 2 of, and Schedule 1 to, the Social Security Act 1985) defines the terms “revaluation period” and “revaluation year” and requires the Secretary of State to specify by order, in each revaluation year, a “revaluation percentage” for each revaluation period.