| British Phone Books, 1880-1984 | 278,407,890 |
| UK, City and County Directories, 1766 - 1946 | 42,782,467 |
| UK, Phone Book Indexes, 2001 and 2003 | 25,993,597 |
| London, England, City Directories, 1736-1943 | 19,793,623 |
| London, England, Workhouse Admission and Discharge Records, 1764-1921 | 10,098,399 |
| UK, Midlands and Various UK Trade Directories, 1770-1941 | 8,555,301 |
| West Yorkshire, England, Church of England Births and Baptisms, 1813-1910 | 6,287,209 |
| Manchester, England, Church of England Births and Baptisms, 1813-1915 | 5,070,679 |
| West Yorkshire, England, Church of England Baptisms, Marriages and Burials, 1512-1812 | 4,953,780 |
| Northamptonshire, England, Church of England Baptisms, Marriages and Burials, 1532-1812 | 4,135,217 |
| West Yorkshire, England, Church of England Marriages and Banns, 1813-1935 | 4,130,806 |
| Lancashire, England, Church of England Baptisms, Marriages and Burials, 1538-1812 | 4,013,193 |
| Gloucestershire, England, Church of England Baptisms, 1813-1913 | 3,163,228 |
| London, England, School Admissions and Discharges, 1840-1911 | 3,161,852 |
| UK and Ireland, Medical Registers, 1859-1943 | 2,991,949 |
| Birmingham, England, Church of England Baptisms, 1813-1922 | 2,943,642 |
| London, England, Church of England Deaths and Burials, 1813-2003 | 2,780,380 |
| Surrey, England, Church of England Baptisms, 1813-1921 | 2,586,430 |
| Warwickshire, England, Church of England Baptisms, Marriages, and Burials, 1535-1812 | 2,562,810 |
| Manchester, England, Church of England Baptisms, Marriages and Burials, 1541-1812 | 2,556,123 |
| Liverpool, England, Church of England Baptisms, 1813-1919 | 2,527,837 |
| U.K. and U.S. Directories, 1680-1830 | 2,518,462 |
| Manchester, England, Church of England Marriages and Banns, 1754-1930 | 2,428,779 |
| Northamptonshire, England, Church of England Baptisms, 1813-1912 | 2,323,156 |
| UK, Railway Employment Records, 1833-1956 | 2,041,650 |
| Surrey, England, Church of England Baptisms, Marriages and Burials, 1538-1812 | 1,883,770 |
| Birmingham, England, Church of England Marriages and Banns, 1754-1939 | 1,740,297 |
| England, United Grand Lodge of England Freemason Membership Registers, 1751-1921 | 1,713,246 |
| UK & Ireland, Nursing Registers, 1898-1968 | 1,600,730 |
| Liverpool, England, Church of England Marriages and Banns, 1754-1935 | 1,567,724 |
| Warwickshire, England, Church of England Baptisms, 1813-1910 | 1,515,334 |
| Gloucestershire, England, Church of England Marriages and Banns, 1754-1938 | 1,492,754 |
| UK, Postal Service Appointment Books, 1737-1969 | 1,466,970 |
| West Yorkshire, England, Church of England Deaths and Burials, 1813-1985 | 1,331,307 |
| Manchester, England, Church of England Deaths and Burials, 1813-1985 | 1,226,981 |
| Birmingham, England, Church of England Baptisms, Marriages and Burials, 1538-1812 | 1,219,917 |
| Surrey, England, Church of England Marriages and Banns, 1754-1937 | 1,197,098 |
| Yorkshire, England, Church of England Parish Records, 1538-1873 | 1,192,245 |
| UK, Register of Duties Paid for Apprentices' Indentures, 1710-1811 | 1,045,652 |
| UK & Ireland, Medical Directories, 1845-1942 | 994,038 |
| Gloucestershire, England, Church of England Burials, 1813-1988 | 826,003 |
| Warwickshire, England, Church of England Marriages and Banns, 1754-1910 | 760,552 |
| Northamptonshire, England, Church of England Marriages, 1754-1912 | 733,877 |
| Wigan, England, Church of England Baptisms, 1813-1911 | 658,125 |
| England & Wales, Quaker Birth, Marriage, and Death Registers, 1578-1837 | 586,018 |
| Surrey, England, Church of England Burials, 1813-1997 | 566,180 |
| UK and Commonwealth, Law Examination Records, 1836-1947 | 537,286 |
| Birmingham, England, Church of England Burials, 1813-1964 | 536,245 |
| Tyne and Wear, England, Non-Conformist Baptisms, Marriages and Burials, 1710-1960 | 512,140 |
| London, England, Poor Law School District Registers, 1852-1918 | 510,893 |
| Liverpool, England, Church of England Burials, 1813-1975 | 502,561 |
| Northamptonshire, England, Church of England Burials, 1813-1912 | 484,456 |
| London, England, Freedom of the City Admission Papers, 1681-1930 | 463,958 |
| Liverpool, England, Church of England Baptisms, Marriages and Burials, 1659-1812 | 453,278 |
| Manchester, England, Marriages and Banns, 1754-1930 (Cathedral) | 425,377 |
| West Yorkshire, England, Select Rate Books, Accounts and Censuses, 1705–1893 | 422,295 |
| U.K., City and County Directories, 1600s-1900s | 404,728 |
| UK, The Midwives Roll, 1904-1959 | 398,334 |
| Manchester, England, Baptisms, Marriages and Burials, 1573-1812 (Cathedral) | 376,533 |
| UK, Apprentices Indentured in Merchant Navy, 1824-1910 | 342,282 |
| London, England, Poor Law and Board of Guardian Records, 1738-1926 | 319,763 |
| Manchester, England, Births and Baptisms, 1813-1901 (Cathedral) | 282,956 |
| Warwickshire, England, Occupational and Quarter Session Records, 1662-1866 | 282,680 |
| UK and Ireland, Masters and Mates Certificates, 1850-1927 | 281,933 |
| UK, Royal Mail Pension and Gratuity Records, 1860-1970 | 278,540 |
| Warwickshire, England, Church of England Burials, 1813-1910 | 277,236 |
| Wigan, England, Church of England Baptisms, Marriages and Burials, 1580-1812 | 269,180 |
| Wigan, England, Church of England Marriages, 1754-1926 | 261,782 |
| London, England, Stock Exchange Membership Applications, 1802-1924 | 256,986 |
| Dorset, England, Poor Law and Church of England Parish Records, 1511-1997 | 254,640 |
| England, Dreadnought Seamen's Hospital Admissions and Discharges, 1826-1930 | 221,010 |
| Medway, Kent, England, Poor Law Union Records, 1836-1937 | 217,679 |
| England, Pallot's Baptism Index, 1780-1837 | 201,977 |
| UK, Civil Engineer Lists, 1818-1930 | 194,446 |
| UK, University of London Student Records, 1836-1945 | 188,619 |
| Warwickshire, England, Miscellaneous Church of England Parish Records | 182,040 |
| London, England, School Admissions and Discharges, 1912-1918 | 178,308 |
| UK, Electrical Engineer Lists, 1871-1930 | 164,887 |
| Cambridge University Alumni, 1261-1900 | 151,053 |
| UK, Coal Mining Accidents and Deaths Index, 1878-1951 | 150,226 |
| Kensington and Chelsea, Church of England Parish Chest Records, 1597-1950 | 135,370 |
| Wigan, England, Church of England Burials, 1813-1979 | 133,285 |
| UK, Physiotherapy and Masseuse Registers, 1895 -1980 | 128,037 |
| UK, Dentist Registers, 1879-1942 | 124,647 |
| Oxford University Alumni, 1500-1886 | 122,726 |
| UK, World War II Women's Land Army Index Cards, 1939-1948 | 120,773 |
| U.S. and Canada, Quaker Yearly Meeting Annual Reports, 1808-1930 | 116,253 |
| UK, Mechanical Engineer Records, 1847-1938 | 109,201 |
| Liverpool, England, Catholic Confirmations, 1813-1926 | 100,300 |
| UK, Medical and Dental Students Registers, 1882-1937 | 92,436 |
| Surrey, England, World War II Home Guard Records, 1940-1945 | 92,037 |
| Ireland, The Royal Irish Constabulary 1816-1921 | 88,624 |
| UK, Clergy List, 1897 | 72,562 |
| London, England, Metropolitan Police Pension Registers, 1852-1932 | 68,589 |
| Kensington and Chelsea, London, England, Poor Law Records, 1695-1921 | 66,501 |
| Surrey, England, Licensed Victuallers, 1785-1903 | 64,616 |
| London, England, Church of England Confirmation Records, 1838-1923 | 52,837 |
| UK, Articles of Clerkship, 1756-1874 | 49,371 |
| Somerset, England, School Registers, 1860-1914 | 47,047 |
| West Yorkshire, England, Occupation Records, 1793-1930 | 46,225 |