Changes to Regulation (EEC) No 103/76 laying down common marketing standards for certain fresh or chilled fish
EU Regulation No 103/1976
Made by Regulation (EEC) No 3940/87 amending Council Regulations (EEC) No 103/76, (EEC) No 104/76, (EEC) No 105/76…
From legislation.gov.uk's record of changes, the official one: see it there.