Increases in certain pensions
3.—(1) The pension authority may, if any of the conditions in paragraph (2) are fulfilled, increase the annual rate of an official pension in respect of any period on or after 7th April 2008 as follows—
(a)a pension beginning before 9th April 2007 may be increased by 3.9 per cent of the basic rate (as increased by the amount of any increase under section 1 of the Act of 1971 or the existing Orders);
(b)a pension beginning on or after 9th April 2007 and before 7th April 2008 may be increased by 3.9 per cent multiplied by—
where
A is the number of complete months in the period between the beginning date of the pension and 7th April 2008; and
B is 12.
(2) Those conditions are—
(a)a qualifying condition is satisfied;
(b)the official pension is—
(i)a derivative pension;
(ii)a substituted pension; or
(iii)a relevant injury pension.