- Oakengates Urban District Council Act 1925
- Oakham Gas and Electricity Act 1923
- Oakham Gas and Electricity Act 1932
- Oath's Act
- Oaths Act 39
- Oaths Act 1838 2
- Oaths Act 1888 48
- Oaths Act 1889 2
- Oaths Act 1909 9
- Oaths Act 1961 8
- Oaths Act 1978 9
- Oaths Consolidation Act
- Oaths of Minors Act
- OATHS USDER THE IRISH REFORM ACT
- OATHS VALIDITY ACT 4
- Oaths' Act
- Oats Act
- Oban Burgh Order Confirmation Act 1956
- Objections to the Newspaper Stamp Act
- Obscence Publications Act 3
- Obscene I Publications Act
- Obscene Publication Act 1959
- Obscene Publications Act 512
- Obscene Publications Act 1857 22
- Obscene Publications Act 1859
- Obscene Publications Act 1939
- Obscene Publications Act 1951
- Obscene Publications Act 1955 2
- Obscene Publications Act 1959 499
- Obscene Publications Act 1964 35
- Obscene Publications Act 1969
- Obscene Publications Act 1981
- Obscene Publicatons Act 1959
- Obscene Publictions Act 1959
- Obscenity Act 3
- Obscenity Act 1959 2
- Observance Act 2
- Obsolete Provisions in the Companies Act 1948
- Occasional Conformity Act 2
- Occasional Licences and Young Persons Act 1956 9
- Occupier's Liability (Scotland) Act 1960 2
- Occupier's Liability Act 1957 3
- Occupiers (Liability) Act
- Occupiers Liability (Scotland) Act 1960
- Occupiers Liability Act 4
- Occupiers Liability Act 1957 5
- Occupiers Liability Act 1960
- Occupiers Liability Act 1984 2
- Occupiers of Premises Act
- Occupiers' Liability (Scotland) Act 1960 3
- Occupiers' Liability Act 16
- Occupiers' Liability Act 1957 23
- Occupiers' Liability Act 1960 2
- Occupiers' Liability Act 1984 19
- Occupiers' Liabilty Act 1984
- Ocean Accident Insurance Act
- Ocean Shipping Reform Act
- Ocean Transport and Trading (Delivery Warrants) Act 1975 2
- Octennial Act
- Od Age Pensions Act 2
- OECD Financial Support Fund Act 1975
- OECD Support Fund Act 1975 2
- OFCOM Act 2002 4
- Off-shore Petroleum Development (Scotland) Act
- Offence Against the Person Act 1861
- Offences (Amendment) Act 1976
- Offences (Obscene Publications) Act 1954
- Offences Act 1959 3
- Offences Act 1985
- OFFENCES AGAINST THE PAWNBROKERS ACT
- Offences Against the Person Act 1861
- Offences Against the Person Act 1861 317
- Offences Against the Person Act 1961 2
- Offences Against the Persons Act 1861 16
- Offences Against the State Act 14
- Offences Against the State Act 1939
- Offences Against the State Act 1972
- Offences of Person Act 1861 2
- Offenders (Scotland) Act 1960
- Offenders Act 2
- Offenders Act 1907
- Offenders Act 1967
- Offenders Act 1974
- Offensive Weapon Act 1996
- Offensive Weapons Act 1959 7
- Offensive Weapons Act 1996 11
- Offical Secrets Act
- Offical Secrets Act 1989
- Office Act 2
- Office Act 1969
- Office and Shop Premises Act 4
- Office Development Act
- Office Development Control Act
- Office Hours Act
- Office of Communications Act 2002 30
- Office of Fair Trading in the Financial Services Act 1986
- Office Shops and Railway Premises Act 1963
- Office, Shops and Railway Premises Act
- Office, Shops and Railway Premises Act 1963 4
- Office, Shops and Railways Premises Act
- Officers (Chancery) Act
- Officers of Arms Act
- Officers of Royal Naval Reserve Act 1863
- Offices Act 16
- Offices Act 1960 15
- Offices and Import Restrictions Act 1934
- Offices and Shop Premises Act 3
- Offices and Shops Act 3
- Offices Pensions Act
- Offices Shops and Railway Premises Act 1963 9
- Offices, Shop and Railways Premises Act 1963
- Offices, Shops and Premises Act
- Offices, Shops and Railway Premises Act 249
- Offices, Shops and Railway Premises Act 1913
- Offices, Shops and Railway Premises Act 1962
- Offices, Shops and Railway Premises Act 1963 223
- Offices, Shops and Railway Premises Act 1965
- Offices, Shops and Railways Premises Act 1963 20
- Offices, Shops Railway Premises Act 1963
- Offices, Shops, and Railway Premises Act
- Offices, Shops, and Railway Premises Act 1963
- Official Act
- Official Information Act 5
- Official Information Act 1982 2
- Official Language Act 2003
- Official Languages Act 2003 17
- Official Loyalist Secrets Act
- Official Pensions Act
- Official Pensions Act 1870
- OFFICIAL REPORT of the Second Reading of the New Towns Act
- Official Secets Act
- Official Secret Act 1989 2
- Official Secrete Act 4
- Official Secrete Act 1911
- Official Secrets Act 3464
- Official Secrets Act 1869
- Official Secrets Act 1889 16
- Official Secrets Act 1899
- Official Secrets Act 1911 625
- Official Secrets Act 1920 86
- Official Secrets Act 1921
- Official Secrets Act 1939 2
- Official Secrets Act 1970
- Official Secrets Act 1986 2
- Official Secrets Act 1988
- Official Secrets Act 1989 213
- Official Secrets' Act
- Official Solicitor Act 1919
- Officials Secrets Act 1911 10
- Offshore Installations (Application of Employers' Liability (Compulsory Insurance) Act 1969
- Offshore Installations (Application of the Employers (Compulsory Insurance) Act 1969
- Offshore Installations Act
- Offshore Oil Act 1991
- Offshore Petroleum (Scotland) Act 1975
- Offshore Petroleum Development (Scotland) Act 1972
- Offshore Petroleum Development (Scotland) Act 1975 30
- Offshore Safety (Protection Against Victimisation) Act 1992 5
- Offshore Safety Act 1992 4
- Oil and Gas (Enterprise) Act 1982 137
- Oil and Gas Conservation Act
- Oil and Gas Enterprise Act 4
- Oil and Gas Enterprise Act 1982 3
- Oil and Pipelines Act 1985 12
- Oil Burners (Standards) Act 1960 27
- Oil Burners Act
- Oil Heaters Act
- Oil in Navigable Water Act
- Oil in Navigable Waters Act 1922 116
- Oil in Navigable Waters Act 1955 57
- Oil in Navigable Waters Act 1963 7
- Oil in Navigable Waters Act 1971 9
- OIL IN NAVINGABLE WATERS ACT
- Oil Navigable Waters Act 1955
- Oil Pollution Act 6
- Oil Pollution Act 1924
- Oil Pollution Act 1971
- Oil Pollution Act 1990 4
- Oil Taxation Act 1975 142
- Oil Taxation Act 1980 2
- Oil Taxation Act 1983 14
- Okehampton Bypass (Confirmation of Orders) Act
- Okehampton Bypass (Confirmation of Orders) Act 1985
- Old Age (Non-Contributory) Pensions Act 1936
- Old Age and Widow's Pension Act 1940 2
- Old Age and Widows Pensions Act 1940 9
- Old Age and Widows' Pension Act 1940 4
- Old Age and Widows' Pensions Act 1940 83
- Old Age and Widows' Pensions Act 5940
- Old Age and Widows' Pensions' Act 1940
- Old Age Contributory Pensions Act 1925
- Old Age Contributory Pensions Act 1936 2
- Old Age Pension Act 80
- Old Age Pension Act 1908 5
- Old Age Pension Act 1911 5
- Old Age Pension Act 1919 4
- Old Age Pension Act 1924
- Old Age Pension Act 1936 5
- Old Age Pension Act 1957
- Old Age Pension Amending Act
- Old Age Pensioners Act
- Old Age Pensions (Amendment) Act 1911
- Old Age Pensions Act 1819
- Old Age Pensions Act 1903
- Old Age Pensions Act 1908 1039
- Old Age Pensions Act 1909 2
- Old Age Pensions Act 1911 55
- Old Age Pensions Act 1919 39
- Old Age Pensions Act 1924 13
- Old Age Pensions Act 1925
- Old Age Pensions Act 1930
- Old Age Pensions Act 1936 86
- Old Age Pensions and Widows' Pensions Act 1940
- Old Age Supplementary Pensions Act
- Old Age, Widows' and Orphans' Act
- Old Ago Pension Act
- Old Ago Pensions Act 1908 3
- Old Cases Act 15
- Old Conventicle Act
- Old London Road, Hythe, Burial Ground Act 1974 2
- Old Pals Act 5
- Old Pals' Act 2
- Old Pensions Act 1911
- Old Roads and Bridges Act
- Old Sleaford (Lincolnshire) Chapel Charity Scheme Confirmation Act 1914
- Old Superannuation Act
- Old, Age Pension Act
- Old, Age Pensions Act
- Old-Age Pension Act 7
- OLD-AGE PENSION ACT 1908
- Old-Age Pensions Act 1908 152
- Old-Ago Pension Act 2
- Oldbury Corporation Act 1949 2
- Oldbury Urban District Council Act 1929
- Oldham and Rochdale Corporations Water Act 1923
- Oldham Borough Improvement Act 1865
- Oldham Corporation Act 1880 2
- Oldham Corporation Act 1909
- Oldham Corporation Act 1925 2
- Oldham Corporation Act 1960 3
- Oldham Corporation Act 1966
- Oldham Corporation Act 1971 2
- Oldham Extension Act 1950
- Oldham Improvement Act 1880 2
- Oldham Inprovement Act
- Oldham Water Act
- Olean Air Act
- Olympic Symbol etc. (Protection) Act
- Olympic Symbol etc. (Protection) Act 1995 2
- Olympic Symbol etc. Protection Act 1995 2
- OM Age Pension Act
- Omnibus Act
- One Act 6
- One-pound Note Act
- Ontario Act 3
- Ontario Amending Act
- Ontario Corporations Act
- Ontario Deposit Insurance Corporation Act 1967
- Ontario Temperance Act
- Ontario Women's Equal Employment Opportunity Act 1970
- ONTRIBUTORY PENSIONS ACT
- Open Cast Coal Act
- Open Space Act 1906
- Open Spaces (Metropolis) Act
- Open Spaces Act 25
- Open Spaces Act 1881 2
- Open Spaces Act 1887 6
- Open Spaces Act 1890
- Open Spaces Act 1906 73
- Open Spaces Act 1907
- Open-Cast Coal Act 1958 2
- Opencast Coal Act 1958 183
- Opencast Coal Mining Act
- Opencast Mining Act 1958 2
- Operation and Consequences of the Abortion Act 3
- Operation and Effectiveness of Part II of the Wildlife and Countryside Act 1981 3
- Operation and Effectiveness of the Wildlife and Countryside Act 1981
- Operation and Finance of Part I of the Legal Aid and Advice Act 1949 2
- OPERATION OF CATERING WAGES ACT
- Operation of Education Act
- OPERATION OF FIRST OFFENDERS ACT
- Operation of Poor-law Act
- OPERATION OF STREET OFFENCES ACT 1959
- Operation of Tests Act 3
- Operation of the Abortion Act
- Operation of the Alkali Act 1863
- Operation of the Anatomy Act
- Operation of the Animals (Scientific Procedures) Act 1986 23
- Operation of the Bankruptcy Law Amendment Act
- Operation of the Catering Wages Act 1943 2
- Operation of the Child Support Act 2
- Operation of the Deer Removal Act
- Operation of the Factories Act 2
- Operation of the Factory Act
- Operation of the Fair Employment (Northern Ireland) Act 1989
- Operation of the Firearms Act 1968 2
- Operation of the Habeas Corpus Suspension Act 5
- Operation of the Land Act
- Operation of the Metropolitan Police Act
- Operation of the Northern Ireland (Emergency Provisions) Act 1978 3
- Operation of the Northern Ireland (Emergency Provisions) Act 1991
- Operation of the Patents for Inventions' Act
- Operation of the Poor Law Act 2
- Operation of the Prevention of Terrorism (Temporary Provisions) Act 1976 6
- Operation of the Queen's Prison Act
- Operation of the Redundancy Payments Act
- Operation of the Slavery Abolition Act
- Operation of the Tea Duties Act
- Operation of the Ten Year Enlistment Act
- Operation of the Treasure Act 1996 2
- Operations of Irish Land Act
- Operations of Irish Land Act 1903
- Opium Act 2
- Opportunities Act
- Opposition Act 2
- Opposition for the Human Rights Act
- Opposition's Loan Compensation Act
- Opposition's National Health Act 1975
- Optician's Act
- Optician's Act 1989
- Opticians Act 94
- Opticians Act 1958 150
- Opticians Act 1959
- Opticians Act 1989 24
- Opticians' Act 1958
- Optional Valuation Act
- Orange Procession Act
- Order (Amendment) Act
- Order Act 1936 3
- Order Act 1994 2
- Order and Dispositions Clauses of the Bankruptcy Act
- Order Confirmation Act 3
- Order Confirmation Act 1893 2
- Order Confirmation Act 1994
- Order Paper the Southern Rhodesia Act 1965
- Ordinance Survey Act 1841 2
- Ordinances of Corporations Act 1503
- Ordnance Act 1885
- Ordnance and Military Services Act 1984
- Ordnance Board Transfer Act 1855 2
- Ordnance Factories and Military Services Act 1984 24
- Ordnance Survey Act 1841 18
- Ordnance Survey Act 1941
- Organic Act
- Organisation and Development Act
- Organisations (Immunities and Privileges) Act 1950
- ORGANIZATION ACT
- Origin of the Black Act
- Original Allotments Act
- Orkney and Shetland (Small Piers and Harbours) Act
- Orkney and Shetland Small Piers and Harbours Act
- Orkney County Council Act 1974 6
- Orkney Islands Council Order Confirmation Act
- Orkney Islands Council Order Confirmation Act 1978 2
- Orkney Islands Council Order Confirmation Act 1984
- Ormskirk Gas and Electricity Act 1915
- Orphans' and Old Age Contributory Pensions (Voluntary Contributors) Act 1937
- Orphans' and Old Age Contributory Pensions Act 1925
- Orphans' and Old Age Pensions Act
- Orpington Urban District Council Act 1954
- Orpington Urban District Council Act 1962 2
- Osborne Act
- Osborne Estate Act 1902 30
- Osborne Estate Act 1914 2
- Osborne Estates Act 1902 2
- Osborne's Divorce Act 1920
- Osetopaths Act 1993
- Ossett Corporation (Water) Act 1922
- Ossett Corporation Act 1038
- Ossett Corporation Act 1914
- Osteopaths Act 1993 110
- Ottawa (Agreements) Act 1932 3
- Ottawa Act 2
- OTTAWA AGEEEMENTS ACT
- Ottawa Agreement Act 7
- Ottawa Agreement Act 1932 3
- Ottawa Agreements Act 90
- Ottawa Agreements Act 1932 84
- Ottawa Agreements Act 2932 2
- Ottawa Duties Act
- Ottowa Agreements Act
- Oudh Rent Act 1886 2
- OUNTY OFFICERS AND COURTS (IRELAND) ACT 1877
- Ouse and Cam Fisheries Provisional Order Confirmation Act 1927
- Ouse Drainage Act 9
- Ouse Drainage Act 1920
- Ouse Flood Protection Act
- Out Act 1994
- Out-door Belief (Friendly Societies) Act 1894
- Out-door Relief (Friendly Societies) Act 1894 5
- Out-door Relief (Friendly Societies) Act 1904
- Out-door Relief Friendly Societies Act 1894 2
- Out-pension Act
- Outdoor Relief (Friendly Societies) Act 1894 11
- Outdoor Relief (Friendly Societies) Act 1904 2
- Outdoor Relief (Ireland) Act 1898
- Outdoor Relief Act 2
- Outdoor Relief Friendly Societies Act
- Outdoor Relief Friendly Societies Act 1894 2
- Outer Space Act 1986 10
- Outlawry Act
- Output of Beer (Restriction) (No. 2) Act 1916
- Output of Beer (Restriction) Act 1916 15
- Output of Beer (Restriction) Amendment Act 1916 2
- Output of Beer (Restrictions) Act 1916 2
- Output of Beer Restriction Act
- Output of Beer Restriction Amendment Act
- Output of Beer Restrictions Act
- Overcrowding Act 12
- Oversea Settlement Act 5
- Oversea Superannuation Act
- Overseas Act 1960
- Overseas Aid Act 21
- Overseas Aid Act 1966 28
- Overseas Aid Act 1968 28
- Overseas Air Act 1968
- Overseas and Development Co-operation Act 1980
- Overseas and Development Service Act
- Overseas Credits Act 2
- Overseas Development Act 1947
- Overseas Development Act 1948 5
- Overseas Development Act 1968
- Overseas Development and Co-operation Act 1980 102
- Overseas Development and Cooperation Act 1980 8
- Overseas Development and Service Act 1965 16
- Overseas Development and Services Act 1965 3
- Overseas Development Resources Act 1948
- Overseas Investment and Export Guarantees Act 1972 12
- Overseas Pension Act 1973 2
- Overseas Pensions Act 1958
- Overseas Pensions Act 1973 47
- Overseas Police Force Act
- Overseas Promotion (Wales) Act 1992
- Overseas Public Servants Act
- Overseas Resources (Development) Act
- Overseas Resources Act 3
- Overseas Resources Act 1948 2
- Overseas Resources and Development Act
- Overseas Resources Development Act 53
- Overseas Resources Development Act 1948 53
- Overseas Resources Development Act 1949
- Overseas Resources Development Act 1951 3
- Overseas Resources Development Act 1954 11
- Overseas Resources Development Act 1956 2
- Overseas Resources Development Act 1958 3
- Overseas Resources Development Act 1959 17
- Overseas Resources Development Act 1969 6
- Overseas Resources Development Corporation Act
- Overseas Service Act 1958 18
- Overseas Service Act 1961 22
- Overseas Service and Development Act
- Overseas Services Act 2
- Overseas Services Act 1961
- Overseas Settlement Act 24
- Overseas Settlement Act 1922
- Overseas Superannuation Act 1991
- Overseas Trade (Credit and Insurance) Act 4
- Overseas Trade (Credit and Insurance) Act 1920 2
- Overseas Trade (Credit Insurance) Act
- Overseas Trade (Credits and Insurance) Act 1920 16
- Overseas Trade (Credits and Insurances) Act 1920
- Overseas Trade (Guarantees) Act 1939
- Overseas Trade Act 6
- Overseas Trade Act 1920 3
- Overseas Trade Act 1929 3
- Overseas Trade Act 1930
- Overseas Trade Act 1934
- Overseas Trade Credit and Insurance Act 2
- Overseas Trade Credits and Insurance Act 1920
- Overseas Trade Department (Secretary) Act 1918
- Overseas Trade Facilities Act
- Overseas Trade Guarantee Act 1939 2
- Overseas Trade Guarantees Act 1939 28
- Overseas Trade, Credit and Insurance Act
- Overseas, Resources Development Act 1948
- Overseers Act
- Ownership Act 1976
- Oxford Act 39
- Oxford and Cambridge Act 10
- Oxford and Cambridge Act 1923
- Oxford and Cambridge Commission Act
- Oxford and Cambridge Universities Act 2
- Oxford and Cambridge Universities Act 1923
- Oxford and District Tramways Act 1909
- Oxford and District Tramways Act 1914 2
- Oxford Canal Act 1935 2
- Oxford Corporation (Water, etc.) Act 1928
- Oxford Corporation Act 1933 2
- Oxford Corporation Act 1953
- Oxford Corporation Act 1972 2
- Oxford Extension Act 1928
- Oxford Local Poor Act
- Oxford Motor Services Act 1921
- Oxford Motor Services Act 1951
- Oxford Police Act
- Oxford Reform Act
- Oxford University Act 1854 24
- Oxford University Act 1862
- Oxford University Reform Act 3
- Oxfordshire Act 1985 2
- Oxfordshire and District Water Board Act 1972 2
- Oxfordshire County Council Act 1970
- Oxfordshire County Council Act 1971 3
- Oyster and Mussel Fisheries (West Loch Tarbert) Order Confirmation Act 1888
- Oyster and Mussel Fisheries Act 1866 4
- Oyster and Mussel Fisheries Confirmation Act 1870
- Oyster Fisheries Act 4
- Oyster Fishery (Roach River) Provisional Order Confirmation Act 1923
- Oystermouth Urban District Council (Water) Act 1911
- Oysters and Crabs and Lobster Fisheries Act
41,870 acts in total