After section 1A of the European Union (Withdrawal) Act 2018 (saving for the European Communities Act 1972 for the implementation period) (for which see section 1 above) insert -

"1B Saving for EU-derived domestic legislation for implementation period

(1) Subsections (2) to (5) have effect despite the repeal of the European Communities Act 1972 on exit day by section 1.

(2) EU-derived domestic legislation, as it has effect in domestic law immediately before exit day, continues to have effect in domestic law on and after exit day, subject as follows.

(3) Any enactment which continues to have effect by virtue of subsection (2) is to be read, on and after exit day and so far as the context permits or requires, as if -

(a) any reference to an expression which is to be read in accordance with Schedule 1 to the Interpretation Act 1978 and is an expression defined by section 1 of, or Part 2 of Schedule 1 to, the European Communities Act 1972 were a reference to that expression as defined by that section or that Part of that Schedule as it continues to have effect by virtue of section 1A(2) to (4) of this Act,

(b) any reference (however expressed and subject to paragraph (a) above) to -

(i) EU law,

(ii) any particular EU Treaty or any part of it,