| Title | Category | Subcategory | Records |
|---|---|---|---|
| Britain, Gestapo Invasion Arrest List 1940 | Armed Forces & Conflict | Second World War | 3,047 |
| Britain, Histories & Reference Guides | Newspapers, Directories & Social History | Social History | 27,475 |
| Britain, In Memoriam Notices | Life Events (BMDs) | Civil Deaths & Burials | 6,008 |
| Britain, Knights Of The Realm & Commonwealth Index | Newspapers, Directories & Social History | Medal Rolls and Honours | 37,151 |
| Britain, Marriage Licences | Life Events (BMDs) | Parish Marriages | 536,267 |
| Britain, Marriage Licences Browse | Life Events (BMDs) | Civil Marriage & Divorce | 15,305 |
| Britain, Merchant Seamen, 1835-1857 | Education & Work | Merchant Navy & Maritime | 1,915,010 |
| Britain, Merchant Seamen, 1918-1941 | Education & Work | Merchant Navy & Maritime | 1,206,140 |
| Britain, Missing Beneficiaries and Unclaimed Estates 1910 | Life Events (BMDs) | Wills & Probate | 529 |
| Britain, Newgate Prison Calendar Vols 1 & 2, 1780-1841 | Institutions & Organisations | Directories & Almanacs | 1,357 |
| Britain, Physicians and Surgeons, 1830-1923 | Education & Work | Occupations | 31,862 |
| Britain, Registers Of Licences To Pass Beyond The Seas 1573-1677 | Travel & Migration | Migration | 27,758 |
| Britain, Registers Of Licences To Pass Beyond The Seas 1573-1677 Browse | Travel & Migration | Migration | 1,698 |
| Britain, Royal African Company 1694-1743 | Travel & Migration | Migration | 55,954 |
| Britain, Royal African Company 1694-1743 Browse | Travel & Migration | Migration | 1,493 |
| Britain, Royal Navy, Navy Lists 1827-1945 | Armed Forces & Conflict | Directories & Almanacs | 183,798 |
| Britain, Royal Navy, Navy Lists 1827-1945 Browse | Armed Forces & Conflict | Directories & Almanacs | 184,358 |
| Britain, Russian Orthodox Church In London Browse | Life Events (BMDs) | Parish Registers | 13,218 |
| Britain, School and University Register Books | Education & Work | Schools & Education | 25,814 |
| Britain, Trade Union Members, Service & Casualties 1914-1918 | Armed Forces & Conflict | First World War | 61,063 |