7. Where, on or after 1st April 2003 –
(a)any appliance specified in Schedule 1 to the principal Regulations is supplied pursuant to an order given before that date; or
(b)any pre-payment certificate is granted under regulation 9 of the principal Regulations pursuant to an application under that Regulation which was received before that date,
the principal regulations shall have effect in relation to that supply or, as the case may be, that grant as if regulations 2, 3, 4, 5 and 6 of these regulations had not come into operation.