487.Section 165 substitutes a new subsection (2A) in section 142 of the 2003 Act. It sets out the test for the issue of a warrant under Part 3 of the 2003 Act, in respect of a person who has been convicted of an extradition offence in the UK. New subsection (2A) removes the requirement for the person to be “unlawfully at large”, instead requiring that extradition is being sought for sentencing or serving a custodial sentence and that either a domestic warrant has been issued or the person may be arrested without warrant.