4. After regulation 7 (United Kingdom official mark) there shall be inserted the following regulation—
“7A.—(1) The official mark for the purposes of the bands and labels referred to in Article 21(2) of Commission Regulation (EEC) No. 1274/91 shall consist of the letters “UK”, each letter being 1 centimetre high and surrounded by a line describing an oval.
(2) Paragraph (1) above shall not apply in the case of any band or label affixed outside Great Britain.”.