# Extradition Act 2003, Section 5: Provisional arrest

Extent: E+W+S+N.I.

(1) A constable, a customs officer or a service policeman may arrest a person without a warrant if he has reasonable grounds for believing—
(a) that a Part 1 warrant has been or will be issued in respect of the person by an authority of a category 1 territory, and
(b) that the authority has the function of issuing arrest warrants in the category 1 territory.
(2) A constable or a customs officer may arrest a person under subsection (1) in any part of the United Kingdom.
(3) A service policeman may arrest a person under subsection (1) only if the person is subject to service law or is a civilian subject to service discipline.
(4) If a service policeman has power to arrest a person under subsection (1) he may exercise the power anywhere.

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Source: https://www.legislation.gov.uk/ukpga/2003/41/section/5 (the official version)
Page: https://openlegislation.uk/extradition-act-2003/section-5
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.