In the Notes to Form 42AA of the Principal Rules, after Note 4 insert —
" Document in writing
4A. In the case of a document in writing, if the subpoena requires you to produce a document, you may produce a copy of the document unless the subpoena specifically requires you to produce the original.
4B. The copy of a document may be—
(a) a photocopy; or
(b) in PDF format on a CD-Rom.".