In England and Wales, at the extradition hearing the appropriate judge has the same powers (as nearly as may be) as a magistrates' court would have if the proceedings were the summary trial of an information against the person whose extradition is requested.
In Scotland—
In Northern Ireland, at the extradition hearing the appropriate judge has the same powers (as nearly as may be) as a magistrates' court would have if the proceedings were the hearing and determination of a complaint against the person whose extradition is requested.
If the judge adjourns the extradition hearing he must remand the person in custody or on bail.
If the person is remanded in custody, the appropriate judge may later grant bail.