| Highways Act 1980 | 1980 c. 66 | s. 178 | modified | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | Sch. 3 para. 1 | Yes | |
| Town and Country Planning Act 1990 | 1990 c. 8 | Act | modified | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | Sch. 7 para. 1(2) | Yes | |
| Town and Country Planning Act 1990 | 1990 c. 8 | s. 62(1) | applied (with modifications) | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | Sch. 7 para. 1(1)(a) | Yes | |
| Town and Country Planning Act 1990 | 1990 c. 8 | s. 62(3) | applied (with modifications) | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | Sch. 7 para. 1(1)(b) | Yes | |
| Town and Country Planning Act 1990 | 1990 c. 8 | s. 65(5) | applied (with modifications) | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | Sch. 7 para. 1(1)(c) | Yes | |
| Town and Country Planning Act 1990 | 1990 c. 8 | s. 70(1) | applied (with modifications) | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | Sch. 7 para. 1(1)(d) | Yes | |
| Town and Country Planning Act 1990 | 1990 c. 8 | s. 70(2) | applied (with modifications) | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | Sch. 7 para. 1(1)(e) | Yes | |
| Town and Country Planning Act 1990 | 1990 c. 8 | s. 70A(1) | applied (with modifications) | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | Sch. 7 para. 1(1)(f) | Yes | |
| Town and Country Planning Act 1990 | 1990 c. 8 | s. 70A(2) | applied (with modifications) | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | Sch. 7 para. 1(1)(g) | Yes | |
| Town and Country Planning Act 1990 | 1990 c. 8 | s. 71(1) | applied (with modifications) | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | Sch. 7 para. 1(1)(h) | Yes | |
| Town and Country Planning Act 1990 | 1990 c. 8 | s. 71(2) | applied (with modifications) | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | Sch. 7 para. 1(1)(i) | Yes | |
| Town and Country Planning Act 1990 | 1990 c. 8 | s. 72(1) | applied (with modifications) | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | Sch. 7 para. 1(1)(j) | Yes | |
| Town and Country Planning Act 1990 | 1990 c. 8 | s. 73(2) | applied (with modifications) | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | Sch. 7 para. 1(1)(k) | Yes | |
| Town and Country Planning Act 1990 | 1990 c. 8 | s. 73A(1) | applied (with modifications) | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | Sch. 7 para. 1(1)(l) | Yes | |
| Town and Country Planning Act 1990 | 1990 c. 8 | s. 327A(2) | applied (with modifications) | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | Sch. 7 para. 1(1)(m) | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | Act | applied (with modifications) | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | Sch. 4 para. 1 | Yes | |
| Planning (Listed Buildings and Conservation Areas) Act 1990 | 1990 c. 9 | s. 74(2) | modified | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | Sch. 5 para. 1 | Yes | |
| Planning (Hazardous Substances) Act 1990 | 1990 c. 10 | Act | applied (with modifications) | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | Sch. 6 para. 1 | Yes | |
| The Planning (National Security Directions and Appointed Representatives) (Wales) Regulations 2006 | 2006 No. 1387 | reg. 6(4) | words inserted | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | reg. 39(2) | Not yet | |
| The Planning (National Security Directions and Appointed Representatives) (Wales) Regulations 2006 | 2006 No. 1387 | reg. 6(8) | words inserted | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | reg. 39(3) | Not yet | |
| The Works on Common Land, etc. (Procedure) (Wales) Regulations 2012 | 2012 No. 737 | Regulations | applied (with modifications) | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | Sch. 10 para. 1 | Not yet | |
| The Deregistration and Exchange of Common Land and Greens (Procedure) (Wales) Regulations 2012 | 2012 No. 738 | Regulations | applied (with modifications) | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | Sch. 9 para. 1 | Not yet | |
| The Planning (Listed Buildings and Conservation Areas) (Wales) Regulations 2012 | 2012 No. 793 | Regulations | applied (with modifications) | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | Sch. 4 para. 2 | Not yet | |
| The Planning (Listed Buildings and Conservation Areas) (Wales) Regulations 2012 | 2012 No. 793 | Regulations | modified | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | Sch. 5 para. 2 | Not yet | |
| The Town and Country Planning (Development Management Procedure) (Wales) Order 2012 | 2012 No. 801 | Order | applied (with modifications) | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | Sch. 7 para. 2 | Yes | |
| The Planning (Hazardous Substances) (Wales) Regulations 2015 | 2015 No. 1597 | Regulations | applied (with modifications) | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | Sch. 6 para. 2 | Yes | |
| The Developments of National Significance (Procedure) (Wales) Order 2016 | 2016 No. 55 | Order | applied (with or without modifications) | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | reg. 41 Sch. 1-10 | Not yet made to Welsh language versionApplied to English language version | |
| The Developments of National Significance (Procedure) (Wales) Order 2016 | 2016 No. 55 | Order | applied (with modifications) | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | Sch. 4 para. 3 | Not yet made to Welsh language versionApplied to English language version | |
| The Developments of National Significance (Procedure) (Wales) Order 2016 | 2016 No. 55 | Order | applied (with modifications) | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | Sch. 5 para. 3 | Not yet made to Welsh language versionApplied to English language version | |
| The Developments of National Significance (Procedure) (Wales) Order 2016 | 2016 No. 55 | Order | applied (with modifications) | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | Sch. 7 para. 3 | Not yet made to Welsh language versionApplied to English language version | |
| The Developments of National Significance (Procedure) (Wales) Order 2016 | 2016 No. 55 | Order | applied (with modifications) | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | Sch. 9 para. 2 | Not yet made to Welsh language versionApplied to English language version | |
| The Developments of National Significance (Procedure) (Wales) Order 2016 | 2016 No. 55 | Order | applied (with modifications) | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | Sch. 10 para. 2 | Not yet made to Welsh language versionApplied to English language version | |
| The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | reg. 1 | coming into force | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | reg. 1(2) | Yes | |
| The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | reg. 2 | coming into force | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | reg. 1(2) | Yes | |
| The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | reg. 3 | coming into force | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | reg. 1(2) | Yes | |
| The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | reg. 4 | coming into force | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | reg. 1(2) | Yes | |
| The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | reg. 5 | coming into force | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | reg. 1(2) | Yes | |
| The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | reg. 6 | coming into force | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | reg. 1(2) | Yes | |
| The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | reg. 7 | coming into force | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | reg. 1(2) | Yes | |
| The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | reg. 8 | coming into force | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | reg. 1(2) | Yes | |
| The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | reg. 9 | coming into force | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | reg. 1(2) | Yes | |
| The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | reg. 10 | coming into force | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | reg. 1(2) | Yes | |
| The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | reg. 11 | coming into force | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | reg. 1(2) | Yes | |
| The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | reg. 12 | coming into force | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | reg. 1(2) | Yes | |
| The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | reg. 13 | coming into force | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | reg. 1(2) | Yes | |
| The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | reg. 14 | coming into force | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | reg. 1(2) | Yes | |
| The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | reg. 15 | coming into force | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | reg. 1(2) | Yes | |
| The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | reg. 16 | coming into force | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | reg. 1(2) | Yes | |
| The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | reg. 17 | coming into force | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | reg. 1(2) | Yes | |
| The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | reg. 18 | coming into force | The Developments of National Significance (Wales) Regulations 2016 | 2016 No. 56 | reg. 1(2) | Yes | |