A collection of material which had some connection with either the clerks of the Secretaries of State or with the State Paper Office. The series includes a large number of Privy Council minutes and memoranda (otherwise in PC 2), a set of minutes of the proceedings of the Lords Justices during the king's absence in 1755, and a collection of manuscript drafts of proclamations read to the Privy Council in order to receive authorisation for issue as prerogative law. In addition, the series contains a large collection of printed proclamations.

There are two sets of records from the Office of the Secretaries of State: precedent books for foreign and domestic business, the precedents dating from 1514 to 1812; and fee books, 1710-1782, detailing fees received by the officers of the Secretaries of State, mostly on domestic business, and usually connected to the process of issuing warrants to move the great seals of Chancery and Exchequer in the execution of the royal power to authorise appointments, commissions and payments. The fee books can provide a quick overview of such business, as they specify the names of the payers and give brief details of the business: they are also useful for tracing the internal history of the offices of the Secretaries of State.

The series also contains administrative records from the State Paper Office, some of which were collected together to illustrate the history of the keeping and use of the State Papers from the mid-sixteenth century to 1823. Administrative records of the State Paper Office continue from 1799 to 1862 in this series, despite the amalgamation of the State Paper Office and the Public Record Office in 1852: these show the use made of the State Papers by both the Home Office and the Foreign Office.

Records of the State Paper Commission include, as well as administrative papers, a report on libraries in Great Britain and Ireland in 1838.