British Parliamentary Papers 

Debates are the record of the actual discussion on the floors of both houses. The Debates have been officially recorded and published since 1803.  Commons and Lords debates were published together by Hansard until 1909, when they were separated. In the same year (1909) the debates began to be published by the government, and the term "Official Report" was added to their title. 

Research notes

To research debates from before 1803 see The Parliamentary History of England from the Earliest Period to the Year 1803 (also known as Cobbett's), a multi-volume set located in Alderman Stacks, J301 .H62.  See also the selection of freely available digitised debates and a chronology of the debates of the House of Commons.

Questions about 19th century roll-call votes in the House of Commons may be answered by information from Stanford University Library.

1066-1803: Cobett's Parliamentary History (exact title varies)
Call No. J 301.H62, Alderman Library Stacks, 5 OLD

Finding Aid: Table of Contents in front of each volume.

See also debates on America:  
Proceedings and Debates of the British Parliaments Respecting North America (6v)
Call No. E 187 .G79, Alderman Library Stacks  
  
Proceedings and Debates of the British Parliaments Respecting North America, 1754-1783 
Call No. E 187 .G79, Alderman Library Stacks   

1803-1908:  The Parliamentary Debates... (Hansard)
Call No. J301 .H621, Alderman Library Stacks, 5 OLD

Finding Aid: see subject and speaker indexes in back of each session for both Houses, Each volume has an index, and each session is indexed in last volume for session.

Print (full-text), Call No. J301 .H621, Alderman Library Stacks, 5 OLD
v.1-41 (1803/1804-1819/1820)
ser.2: v.1-25 (1820-1830)
ser.3: v.1-71 (1830-1843), 

Microprint only (full-text), Call No. Micprnt S-3, Ivy Annex 
ser.3: v.71-ser.4:v.87 (1844-1900) 
(For microprint see index at the end of each session)
ser.4: v.88-199 (1900-1908)     

1909-1984/1985 (ser. 5 & 6): Parliamentary debates (Hansard). House of Commons Official Report 
Call No. J301 .K62, Alderman Library Stacks, 5 OLD  

Finding Aid: see subject and speaker indexes in back of each session for both Houses. Each volume has an index, and each session is indexed in last volume for session.

1985-1998: Parliamentary debates (Hansard). House of Commons Official Report 
Call No. J301 .K22. Law Library 
(1984/1985-1991/1992 also available in microfiche, Call No. Micfich S-743, Alderman 3rd floor.)

Finding Aid: see subject and speaker indexes in back of each session for both Houses. Each volume has an index, and each session is indexed in last volume for session

See also online full-text of debates in House of Commons from 1988 and House of Lords from 1995.