6(1)Where, immediately before the commencement of this Act—U.K.
(a)a person is exercising a function of a kind mentioned in clause 22 of the clauses set out in Part II of Schedule 2, or Part II of Schedule 3, to the M1Petroleum and Submarine Pipe-lines Act 1975 in connection with a licence granted under section 2 of the Petroleum (Production) Act 1934; and
(b)by virtue of section 19(6) of the M2Petroleum and Submarine Pipe-lines Act 1975, he is deemed to be approved by the Secretary of State as respects that function in connection with that licence,
he shall continue to be deemed to be so approved.
(2)Any act or omission which occurred at a time before a licence was altered by virtue of section 18 of the Petroleum and Submarine Pipe-lines Act 1975 shall not be treated as contravening the provisions of the licence as so altered or as authorising the revocation of the licence if at that time it did not contravene the provisions of the licence or authorise the revocation of it.