# The Pressure Systems and Transportable Gas Containers Regulations 1989, Paragraph 4


If the cost so stated differs from the amount estimated in accordance with paragraph 2 above–
(a) if it is greater, the amount of the difference shall be the amount of the final fee payable and shall be paid forthwith; and
(b) if it is less, the initial fee shall be redetermined accordingly and the amount of the difference shall be paid forthwith to the applicant by the Executive.

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Source: https://www.legislation.gov.uk/uksi/1989/2169/schedule/5/paragraph/4 (the official version)
Page: https://openlegislation.uk/pressure-systems-and-transportable-gas-containers-regulations-1989/schedule-5/paragraph-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.