The main archive for the United Kingdom. It holds genealogical resources for England, Wales, Scotland, and Northern Ireland. Approximately 5% of their records have been digitized.
Many records can be purchased as downloadable pdf files online. These include naval records, army diaries, and PCC wills. It also offers podcasts and important catalogues as well as free collections such their Admiralty collections, the 1851 Ecclesiastical Census Returns for England and Wales, and other records.