Paragraph 1 F1
The plate must be made of retroreflecting material which, as regards its construction, colour and other qualities, complies with the requirements of—
(a)
the British Standard specification for retroreflecting number plates published on 28th February 2018 under number BS AU 145e, or
(b)
any other relevant standard or specification recognised for use in an EEA State and which, when in use, offers a performance equivalent to that offered by a plate complying with the British Standard specification,
and which in either case, is marked with the number (or such other information as is necessary to permit identification) of that standard or specification.