(1) This paragraph applies where -

(a) an aircraft operator ("A") does not have a registered office or a place of residence in the United Kingdom;

(b) "B" is the regulator of A; and

(c) a different regulator ("C") is satisfied that the highest percentage of aviation emissions of A in the 2023 and 2024 scheme years is attributable to flights departing from aerodromes situated in the area of C.

(2) Where paragraph (1) applies, on or before 30th June 2025, C must give notice to -

(a) A;

(b) B; and

(c) the UK ETS authority,

that C is the regulator of A from the beginning of the 2026-2030 allocation period.