Changes made by Rent Act 1977 (Forms, etc.) (Welsh Forms and Particulars) 1994
S.I. 1994/725
Made to Rent Act 1977 (Forms etc.) (Welsh Forms and Particulars) 1993
2 changes. All changes made by Rent Act 1977 (Forms, etc.) (Welsh Forms and Particulars) 1994
From legislation.gov.uk's record of changes, the official one: see it there.