Magistrates' Courts Act 1980

97 Summons to witness and warrant for his arrest

(1) Where a justice of the peace for any county, any London commission area or the City of London is satisfied that any person in England or Wales is likely to be able to give material evidence, or produce any document or thing likely to be material evidence, at an inquiry into an indictable offence by a magistrates' court for that county, that London commission area or the City (as the case may be) or at the summary trial of an information or hearing of a complaint by such a court and that that person will not voluntarily attend as a witness or will not voluntarily produce the document or thing, the justice shall issue a summons directed to that person requiring him to attend before the court at the time and place appointed in the summons to give evidence or to produce the document or thing.

(2) If a justice of the peace is satisfied by evidence on oath of the matters mentioned in subsection (1) above, and also that it is probable that a summons under that subsection would not procure the attendance of the person in question, the justice may instead of issuing a summons issue a warrant to arrest that person and bring him before such a court as aforesaid at a time and place specified in the warrant; but a warrant shall not be issued under this subsection where the attendance is required for the hearing of a complaint.

(3) On the failure of any person to attend before a magistrates* court in answer to a summons under this section, if—

(a) the court is satisfied by evidence on oath that he is likely to be able to give material evidence or produce any document or thing likely to be material evidence in the proceedings; and

(b) it is proved on oath, or in such other manner as may be prescribed, that he has been duly served with the summons, and that a reasonable sum has been paid or tendered to him for costs and expenses; and

(c) it appears to the court that there is no just excuse for the failure,

the court may issue a warrant to arrest him and bring him before the court at a time and place specified in the warrant

(4) If any person attending or brought before a magistrates* court refuses without just excuse to be sworn or give evidence, or to produce any document or thing, the court may commit him to custody until the expiration of such period not exceeding 7 days as may be specified in the warrant or until he sooner gives evidence or produces the document or thing.