# Social Security Act 1998, Paragraph 13


A document bearing a certificate which—
(a) is signed by a person authorised in that behalf by the Secretary of State; and
(b) states that the document, apart from the certificate, is a record of a decision of an appeal tribunal or of an officer of the Secretary of State,
shall be conclusive evidence of the decision; and a certificate purporting to be so signed shall be deemed to be so signed unless the contrary is proved.

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Source: https://www.legislation.gov.uk/ukpga/1998/14/schedule/1/paragraph/13 (the official version)
Page: https://openlegislation.uk/social-security-act-1998/schedule-1/paragraph-13
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.