Case C-171/18: Judgment of the Court (Grand Chamber) of 7 October 2019 (request for a preliminary ruling from the Court of Appeal — United Kingdom) — Safeway Ltd v Andrew Richard Newton, Safeway Pension Trustees Ltd (Reference for a preliminary ruling — Social policy — Article 119 of the EC Treaty (now, after amendment, Article 141 EC) — Male and female workers — Equal pay — Private occupational retirement pension scheme — Normal pension age differentiated by gender — Date of adoption of measures reinstating equal treatment — Retroactive equalisation of that age to the normal pension age of the persons previously disadvantaged)