5.—(1) This Rule applies where a provision of these Rules—
(a)applies a provision of the 1991 Rules which requires the use of a prescribed form, or
(b)makes provision similar to that made by a provision of those Rules which requires the use of a prescribed form.
(2) The form prescribed for the purposes of those Rules is to be used with any modification that the person using the form thinks desirable to reflect the nature of bank insolvency (whether or not the modification is set out in a Practice Form issued by the Treasury for that purpose).