History of Parliament Online This site contains all of the biographical, constituency and introductory survey articles published in The History of Parliament series.
Colonial State Papers provides access to thousands of papers concerning English activities in the American, Canadian, and West Indian colonies between the sixteenth and eighteenth centuries.
PAIS Worldwide social, economic and political issues and public policy. Includes government documents and non-governmental reports as well as journal articles.From 1915.
Medieval and Early Modern Sources Online (MEMSO) a collection of digitized editions of texts covering Britain and its place in the world during the medieval and early modern period (c. 1100-1800).
Northern Ireland. A Divided Community 1921-1972 Offers full-text searching of facsimile images of the complete record of the Stormont Administration in Northern Ireland, 1921-1972 (Public Record Office of Northern Ireland reference CAB/4).