Changes made by Redundant Mineworkers and Concessionary Coal (Payments Schemes) 1973
S.I. 1973/1268
Made to Redundant Mineworkers (Payments Scheme) 1972
2 changes. All changes made by Redundant Mineworkers and Concessionary Coal (Payments Schemes) 1973
From legislation.gov.uk's record of changes, the official one: see it there.