# The Police Pensions (War Service) Regulations 1979, Paragraph 3


Where the policeman concerned is (or on retirement will be) entitled to a deferred pension, the appropriate sum, determined as aforesaid, shall be increased by an amount equal to the compound interest which would have been payable thereon had the sum become payable on 1st April 1975 or the date of his retirement, whichever is the later, and such interest, calculated at 3½% per annum with yearly rests, had been payable in respect of the period beginning with that date and ending immediately before payment of the appropriate sum:
Provided that where he dies before payment of the appropriate sum, no interest shall be payable in respect of any time thereafter.

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Source: https://www.legislation.gov.uk/uksi/1979/1259/schedule/paragraph/3 (the official version)
Page: https://openlegislation.uk/police-pensions-war-service-regulations-1979/schedule/paragraph-3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.