The Presiding Officer or such other person as may be authorised by standing orders may—
administer an oath to any person giving evidence in proceedings of the Parliament, and
require him to take the oath.
Any person who refuses to take an oath when required to do so under subsection (1)(b) is guilty of an offence.
Subsection (4) of section 25 applies to an offence under subsection (2) as it applies to an offence under that section.
Standing orders may provide for the payment of allowances and expenses to persons—
attending proceedings of the Parliament to give evidence, or
producing documents which they have been required or requested to produce,
whether or not in pursuance of a notice under section 24(1).
For the purposes of sections 23 to 25 and this section, a person shall be taken to comply with a requirement to produce a document if he produces a copy of, or an extract of the relevant part of, the document.