Parliamentary Constituencies Act 2020


make provision about reports of the Boundary Commissions under the Parliamentary Constituencies Act 1986; to make provision about the number of parliamentary constituencies and other rules for the distribution of seats; and for connected purposes.

Government Bill

(Cabinet Office)
What is this Bill?

The Parliamentary Constituencies was a Government Bill that became an Act of Parliament.

Is this Bill currently before Parliament?

No. This Bill was introduced on 19 May 2020 and became an Act of Parliament on 14 December 2020.

Whose idea is this Bill?

Government Bills implement the legislative agenda of the Government. This agenda, and the Bills that will implement it, are outlined in the Queen's Speech at the Session's State Opening of Parliament.

How can I find out exactly what this Bill does?

The most straightforward information is contained in the initial Explanatory Notes for the Bill.

Would you like to know more?

See these Glossary articles for more information: Act of Parliament, Government Bills, Process of a Bill

Bill Progession through Parliament

Commons Completed
Lords Completed
Royal Assent

Latest Key documents

Bill Debate
14/12/2020
Act of Parliament
14/12/2020
Bill
11/11/2020
Briefing paper
21/05/2020
Explanatory Note
19/10/2020
Impact Assessment
15/07/2020

Timeline of Bill Documents and Stages

14/12/2020
Royal Assent (Commons)
14/12/2020
Act of Parliament
Parliamentary Constituencies Act 2020 (c. 25)
26/11/2020
Consideration of Commons amendments (Lords)
24/11/2020
Amendment Paper
HL Bill 151-I Marshalled list for Consideration of Commons reasons
23/11/2020
Amendment Paper
HL Bill 151(b) Motions and amendments for Consideration of Commons reasons
18/11/2020
Amendment Paper
HL Bill 151(a) Motions for Consideration of Commons reasons
11/11/2020
Bill
HL Bill 151 Commons reasons
11/11/2020
Bill proceedings: Commons
Proceedings on Consideration of Lords Amendments as at 10 November 2020
10/11/2020
Consideration of Lords amendments (Commons)
10/11/2020
Programme motion
10/11/2020
Amendment Paper
Commons Consideration of Lords Amendments as at 10 November 2020
10/11/2020
Selection of amendments: Commons
Grouping of Lords Amendments by Chloe Smith and selection of motions relating to Lords Amendments by the Speaker (PDF)
10/11/2020
Selection of amendments: Commons
Grouping of Lords Amendments by Chloe Smith and selection of motions relating to Lords Amendments by the Speaker
09/11/2020
Amendment Paper
Notices of CCLA Amendments as at 6 November 2020
06/11/2020
Amendment Paper
Notices of CCLA Amendments as at 5 November 2020
19/10/2020
Bill
Bill 198 2019-21 (Lords Amendments to the Bill)
19/10/2020
Explanatory Notes
Bill 198-EN 2019-21
15/10/2020
3rd reading (Lords)
08/10/2020
Report stage (Lords)
08/10/2020
Bill
HL Bill 140 (as amended on Report)
05/10/2020
Amendment Paper
HL Bill 126-R-I Marshalled list for Report
02/10/2020
Amendment Paper
HL Bill 126-R(f) Amendment for Report
01/10/2020
Amendment Paper
HL Bill 126-R(e) Amendments for Report
30/09/2020
Amendment Paper
HL Bill 126-R(d) Amendments for Report
29/09/2020
Amendment Paper
HL Bill 126-R(c) Amendments for Report
28/09/2020
Amendment Paper
HL Bill 126-R(b) Amendments for Report
28/09/2020
Amendment papers
HL Bill 126-R Running list of amendments (PDF)
22/09/2020
Amendment Paper
HL Bill 126-R(a) Amendment for Report
10/09/2020
Amendment Paper
HL Bill 126-III Third marshalled list for Grand Committee
08/09/2020
Committee stage (Lords)
08/09/2020
Amendment Paper
HL Bill 126-II(Rev) Revised Second marshalled list for Grand Committee
07/09/2020
Amendment Paper
HL Bill 126-II(Provisional) Second marshalled list for Grand Committee
04/09/2020
Select Committee report
13th Report of the Select Committee on the Constitution
03/09/2020
Amendment Paper
HL Bill 126-I Marshalled list for Grand Committee
02/09/2020
Amendment Paper
HL Bill 126(h) Amendment for Grand Committee
01/09/2020
Amendment Paper
HL Bill 126(g) Amendment for Grand Committee
28/08/2020
Amendment Paper
HL Bill 126(f) Amendment for Grand Committee
27/08/2020
Amendment Paper
HL Bill 126(e) Amendment for Grand Committee
26/08/2020
Amendment Paper
HL Bill 126(d) Amendments for Grand Committee
31/07/2020
Amendment Paper
HL Bill 126(c) Amendment for Grand Committee
29/07/2020
Amendment Paper
HL Bill 126(b) Amendments for Grand Committee
29/07/2020
Amendment papers
HL Bill 126 Running list of amendments (PDF)
28/07/2020
Amendment Paper
HL Bill 126(a) Amendments for Grand Committee
27/07/2020
2nd reading (Lords)
22/07/2020
Library Notes
Parliamentary Constituencies Bill: Briefing for Lords Stages
16/07/2020
Delegated Powers Memorandum
Parliamentary Constituencies Bill: Delegated Powers Memorandum
15/07/2020
1st reading (Lords)
15/07/2020
Bill
HL Bill 126 (as introduced)
15/07/2020
Explanatory Notes
HL Bill 126 Explanatory Notes
15/07/2020
Impact Assessments
Impact Assessment from the Cabinet Office
15/07/2020
Bill proceedings: Commons
Report Stage Proceedings as at 14 July 2020
14/07/2020
3rd reading (Commons)
14/07/2020
Report stage (Commons)
14/07/2020
Amendment Paper
Consideration of Bill Amendments as at 14 July 2020
14/07/2020
Amendment Paper
Consideration of Bill Amendments as at 14 July 2020 - large font accessible version
13/07/2020
Selection of amendments: Commons
Speaker’s provisional grouping and selection of Amendments (PDF)
13/07/2020
Amendment Paper
Notices of Amendments as at 10 July 2020
13/07/2020
Selection of amendments: Commons
Speaker’s provisional grouping and selection of Amendments (PDF)
13/07/2020
Selection of amendments: Commons
Speaker’s provisional grouping and selection of Amendments
10/07/2020
Amendment Paper
Notices of Amendments as at 9 July 2020
10/07/2020
Tracked changes versions of Bills: Commons
Version of bill showing changes made in Committee (PDF)
10/07/2020
Tracked changes versions of Bills: Commons
Version of bill showing changes made in Committee
09/07/2020
Library Notes
Notices of Amendments as at 8 July 2020
03/07/2020
Committee Debates: compilation pdf of sitting so far (Commons)
03/07/2020
Keeling schedules
Updated Keeling schedule version - showing the Parliamentary Constituencies Act 1986, as amended by the Parliamentary Constituencies Bill
02/07/2020
Committee Debate: 8th sitting (Commons)
01/07/2020
Committee Debate: 7th sitting (Commons)
01/07/2020
Bill proceedings: Commons
All proceedings up to 1 July 2020 at Public Bill Committee Stage
01/07/2020
Written evidence
Written Evidence: Councillor Julian German, Leader of Cornwall Council (PCB07)
01/07/2020
Written evidence
Written Evidence: Aaron Fear (PCB08)
01/07/2020
Written evidence
Written Evidence: Boundary Commission for England (follow-up from evidence session) (PCB09)
30/06/2020
Bill
Bill 151 2019-21 (as amended)
30/06/2020
Bill
Bill 151 2019-21 (as amended) Large font accesible version
30/06/2020
Amendment Paper
Public Bill Committee Amendments as at 30 June 2020
29/06/2020
Selection of amendments: Commons
Provisional Grouping and Selection of Amendments (Day 2) (PDF)
29/06/2020
Selection of amendments: Commons
Provisional Grouping and Selection of Amendments (Day 2)
26/06/2020
Committee Debate: 6th sitting (Commons)
26/06/2020
Committee Debate: 5th sitting (Commons)
26/06/2020
Amendment Paper
Notices of Amendments as at 25 June 2020
26/06/2020
Public Bill Committee and report stage proceedings: Commons
All proceedings up to 26 June 2020 at Public Bill Committee Stage (PDF)
26/06/2020
Written evidence
Written Evidence: Professor Toby James, Professor of Politics and Public Policy, University of East Anglia (PCB05)
26/06/2020
Written evidence
Written Evidence: Councillor Dick Cole (PCB06)
25/06/2020
Amendment Paper
Public Bill Committee Amendments as at 25 June 2020
25/06/2020
Selection of amendments: Commons
Provisional Grouping and Selection of Amendments (Day 1) (PDF)
25/06/2020
Selection of amendments: Commons
Provisional Grouping and Selection of Amendments (Day 1)
24/06/2020
Committee Debate: 4th sitting (Commons)
24/06/2020
Committee Debate: 3rd sitting (Commons)
24/06/2020
Amendment Paper
Notices of Amendments as at 23 June 2020
24/06/2020
Public Bill Committee and report stage proceedings: Commons
All proceedings up to 23 June 2020 at Public Bill Committee Stage (PDF)
24/06/2020
Written evidence
Written Evidence: Local Government Boundary Commission for England (PCB04)
23/06/2020
Amendment Paper
Public Bill Committee Amendments as at 23 June 2020
22/06/2020
Amendment Paper
Notices of Amendments as at 19 June 2020
19/06/2020
Committee Debate: 2nd sitting (Commons)
19/06/2020
Committee Debate: 1st sitting (Commons)
19/06/2020
Amendment Paper
Notices of Amendments as at 18 June 2020
19/06/2020
Public Bill Committee and report stage proceedings: Commons
All proceedings upto 18 June 2020 at Public Bill Committee Stage (PDF)
19/06/2020
Amendment Paper
Public Bill Committee Amendments as at 18 June 2020
19/06/2020
Bill proceedings: Commons
Public Bill Committee Proceedings as at 18 June 2020
19/06/2020
Written evidence
Written Evidence: Liam Pennington (PCB01)
19/06/2020
Written evidence
Written Evidence: John Bryant (PCB02)
19/06/2020
Written evidence
Written Evidence: Dr Alan Renwick and Professor Robert Hazell, Constitution Unit, University College London (PCB03)
17/06/2020
Amendment Paper
Notices of Amendments as at 16 June 2020
16/06/2020
Amendment Paper
Notices of Amendments as at 15 June 2020
12/06/2020
Amendment Paper
Notices of Amendments as at 11 June 2020
05/06/2020
Press notices
Have your say
02/06/2020
2nd reading (Commons)
02/06/2020
Programme motion
02/06/2020
Money resolution
01/06/2020
Keeling schedules
Keeling schedule version - showing the Parliamentary Constituencies Act 1986, as amended by the Parliamentary Constituencies Bill
21/05/2020
Briefing papers
Briefing paper on Second Reading
19/05/2020
1st reading (Commons)
19/05/2020
Bill
Bill 127 2019-21 (as introduced)
19/05/2020
Bill
Bill 127 2019-21 (as introduced) - large font accessible version
19/05/2020
Explanatory Notes
Bill 127 EN 2019-21
19/05/2020
Explanatory Notes
Bill 127 EN 2019-21 - large font accessible version
19/05/2020
Delegated Powers Memoranda
Delegated Powers Memorandum from the Cabinet Office (PDF)
19/05/2020
Delegated Powers Memorandum
Delegated Powers Memorandum from the Cabinet Office
19/05/2020
Impact Assessments
Impact Assessment from the Cabinet Office (PDF)
19/05/2020
Impact Assessments
Impact Assessment from the Cabinet Office