reg 14 Revocation of permits
(1) The regulator— (a) may at any time revoke a permit by serving on the operator a notice to that effect (a “revocation notice”), and in particular may do so if the operator has failed to pay a fee for the subsistence of the permit; and (b) must do so where— (i) the regulator becomes aware that the operator has failed to comply with regulation 13(1) and (2); (ii) a greenhouse gas emissions permit is held by the operator of an Article 27a installation; (iii) an Article 27 installation emissions permit is held by the operator of an Article 27a installation. (2) A revocation notice takes effect— (a) 28 days after the date on which it is served; or (b) if a later date is specified in the notice, on that date. (3) Paragraph 5 of Schedule 4 makes further provision about the revocation of permits.