11.—(1) An inspector may obliterate any EEC sign or mark if he is satisfied—
(a)that the instrument bearing the sign or mark falls outside the relevant limits of error; or
(b)that the instrument does not comply in any other respect with the requirements of the Directive.
(2) In paragraph (1) above “the relevant limits of error” means
(3) Without prejudice to paragraph (1) above, an inspector may, at the request of any person appearing to him to be the owner of an instrument, obliterate any EEC sign or mark on the instrument which is related to an EEC pattern approval (whether granted under these Regulations or by any member state other than the United Kingdom) which the inspector is satisfied has ceased to have effect.
(4) Obliteration under this Regulation shall be carried out in such manner as the Secretary of State may direct.