British History Online is a collection of nearly 1300 volumes of primary and secondary content relating to British and Irish history, and histories of empire and the British world. BHO also provides access to 40,000 images and 10,000 tiles of historic maps of the British Isles.
https://www.british-history.ac.uk/
BHO is a fascinating website and a useful resource for genealogists, and history lovers alike. It is is a not-for-profit digital library based at the Institute of Historical Research bringing together material for British history from the collections of libraries, archives, museums and academics. These primary and secondary sources, which range from the medieval to the twentieth century, are easily searchable and browsable online.
Much information is freely available, but some records require a paid submission.