(1) This article applies for the purposes of article 9.

(2) Subject to articles 12 and 13 the regulator of an aircraft operator is -

(a) the Environment Agency, where the aircraft operator -

(i) has its registered office or place of residence in England; or

(ii) does not have a registered office or a place of residence in the United Kingdom;

(b) NRW, where the aircraft operator has its registered office or place of residence in Wales;

(c) SEPA, where the aircraft operator has its registered office or place of residence in Scotland;

(d) the chief inspector, where the aircraft operator has its registered office or place of residence in Northern Ireland.