Legislative activity and ranking — United Kingdom

Reforms per year

Legislative seasonality

By type

Active vs. repealed

In force: 3,970 (100.0%)

Most reformed laws

1
Income and Corporation Taxes Act 1988
Public General Act 294 reforms 1988-03-15 — 2022-07-14
2
Water Industry Act 1991
Public General Act 279 reforms 2001-01-30 — 2026-04-06
3
Magistrates’ Courts Act 1980
Public General Act 277 reforms 2002-11-07 — 2026-03-25
4
Local Government Act 1972
Public General Act 267 reforms 2002-06-25 — 2026-04-14
5
Compulsory Purchase Act 1965
Public General Act 250 reforms 2002-05-31 — 2026-03-11
6
Control of Pollution Act 1974
Public General Act 238 reforms 1999-07-27 — 2026-03-11
7
Land Compensation Act 1973
Public General Act 221 reforms 2002-05-31 — 2026-04-07
8
Compulsory Purchase (Vesting Declarations) Act 1981
Public General Act 218 reforms 2002-05-31 — 2026-03-11
9
Freedom of Information Act 2000
Public General Act 206 reforms 2001-05-11 — 2026-04-07
10
Road Traffic Regulation Act 1984
Public General Act 205 reforms 2001-01-30 — 2026-03-11
11
Taxation of Chargeable Gains Act 1992
Public General Act 203 reforms 1992-04-06 — 2025-03-20
12
Social Security Contributions and Benefits (Northern Ireland) Act 1992
Public General Act 191 reforms 2000-07-25 — 2026-03-15
13
Representation of the People Act 1983
Public General Act 190 reforms 2001-02-16 — 2026-03-13
14
Taxes Management Act 1970
Public General Act 189 reforms 1991-02-01 — 2026-01-01
15
Income Tax (Earnings and Pensions) Act 2003
Public General Act 171 reforms 2003-04-06 — 2026-03-15
16
House of Commons Disqualification Act 1975
Public General Act 162 reforms 2001-01-30 — 2026-03-02
17
Greater London Authority Act 1999
Public General Act 161 reforms 2001-01-30 — 2026-04-06
18
Criminal Justice Act 2003
Public General Act 159 reforms 2003-12-18 — 2026-03-22
19
Terrorism Act 2000
Public General Act 158 reforms 2002-12-02 — 2026-02-23
20
Employment Rights Act 1996
Public General Act 146 reforms 1998-04-01 — 2026-04-06