Article 4 Increases in certain lump sums
In respect of any lump sum or instalment of a lump sum which became payable before 26th November 1984 but after 20th November 1983 there may be paid an increase of 5.1 per cent of the amount of the lump sum or instalment (as increased by the amount under section 1 of the 1971 Act or under the existing Orders) multiplied by where
(a)
A is the number of complete months in the period between the beginning date for the lump sum or, if later, 21st November 1983 and the date on which it became payable; and
(b)
B is 12.