Rule 27 Power to require advance production
(1)
A witness summons which is issued under rule 24 and which requires a person to produce a document or thing as mentioned in rule 24(2) may also require him to produce the document or thing—
(a)
at a place stated in the witness summons, and
(b)
at a time which is so stated and precedes that stated under rule 24(2),
for inspection by the person applying for the witness summons.