UK Parliamentary Constituencies (since 1885)
@parlconst.bsky.social
Mapping the changing evolution of the UK's Parliamentary Constituencies
parlconst.org
parlconst.org
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UK Parliamentary Constituencies
This website provides information on the changing composition of parliamentary constituencies in the United Kingdom since 1885. Have you ever wanted to know at a glance:
How constituencies created at each boundary review have been related to their predecessors?
The changing picture of General
www.parlconst.org
I am pleased to announce that the website has been updated with all the remaining constituency groups. So, the current phase of the parlconst project is now complete, subject to any corrections (which I expect) until the next boundary reviews are complete (due by 2033).
www.parlconst.org
www.parlconst.org
10 factorial (10! = 10x9x8x7x6x5x4x3x2x1) is the exact number of seconds in six weeks.
Ok folks: what is your favorite fact that you share with people (maybe a bit too) eagerly?
August 19, 2025 at 4:40 PM
10 factorial (10! = 10x9x8x7x6x5x4x3x2x1) is the exact number of seconds in six weeks.
Croydon West (1950-55) had been wrongly labelled as Croydon South on the constituency map for Southern England. This has now been corrected.
www.parlconst.org/constituency-maps/england/1950
www.parlconst.org/constituency-maps/england/1950
UK Parliamentary Constituencies - 1950
These maps have been created by the author of this website working backwards in time from the current boundaries. The data for 2010 and 2024 boundaries is sourced from Ordnance Survey Open Data and p...
www.parlconst.org
August 10, 2025 at 11:48 AM
Croydon West (1950-55) had been wrongly labelled as Croydon South on the constituency map for Southern England. This has now been corrected.
www.parlconst.org/constituency-maps/england/1950
www.parlconst.org/constituency-maps/england/1950
Bessie Braddock's statue at Liverpool Lime Street station. What you can't see from this picture is that she appears to be in conversation with Ken Dodd.
August 9, 2025 at 7:12 PM
Bessie Braddock's statue at Liverpool Lime Street station. What you can't see from this picture is that she appears to be in conversation with Ken Dodd.
Been doing some tidying. Very pleased that I now have my collection of Boundary Commission reports arranged in chronological order.
From the 1868 report for England & Wales through to the Fifth Periodical Report for Northern Ireland (2008), as well as some interim & local government reviews.
From the 1868 report for England & Wales through to the Fifth Periodical Report for Northern Ireland (2008), as well as some interim & local government reviews.
July 22, 2025 at 3:26 PM
Been doing some tidying. Very pleased that I now have my collection of Boundary Commission reports arranged in chronological order.
From the 1868 report for England & Wales through to the Fifth Periodical Report for Northern Ireland (2008), as well as some interim & local government reviews.
From the 1868 report for England & Wales through to the Fifth Periodical Report for Northern Ireland (2008), as well as some interim & local government reviews.
Reposted by UK Parliamentary Constituencies (since 1885)
My guess was correct - the Bayeux Tapestry will be displayed in the British Museum next year.
I very much doubt that if I go and see it there that I will be the only visitor, as I was in Bayeux in 2021 in the brief period that year when travel to France was allowed.
I very much doubt that if I go and see it there that I will be the only visitor, as I was in Bayeux in 2021 in the brief period that year when travel to France was allowed.
July 8, 2025 at 3:32 PM
My guess was correct - the Bayeux Tapestry will be displayed in the British Museum next year.
I very much doubt that if I go and see it there that I will be the only visitor, as I was in Bayeux in 2021 in the brief period that year when travel to France was allowed.
I very much doubt that if I go and see it there that I will be the only visitor, as I was in Bayeux in 2021 in the brief period that year when travel to France was allowed.
Reposted by UK Parliamentary Constituencies (since 1885)
No inside knowledge, but ...
President Macron arrives in the UK tomorrow for a 3-day state visit.
There appears to be a gap in his itinerary on Wednesday afternoon.
Very unusually the British museum is shut for the day on Wednesday.
My guess is he will he will announce a loan of the Bayeux Tapestry.
President Macron arrives in the UK tomorrow for a 3-day state visit.
There appears to be a gap in his itinerary on Wednesday afternoon.
Very unusually the British museum is shut for the day on Wednesday.
My guess is he will he will announce a loan of the Bayeux Tapestry.
Europe Explored – Trip 1 – From Cornwall to Normandy
“Nous avons besoin de la sagesse normande”(‘What we need is common sense’, once translated literally in the European Parliament as ‘what we need is Norman Wisdom’…
europeexplored.travel.blog
July 7, 2025 at 8:48 PM
No inside knowledge, but ...
President Macron arrives in the UK tomorrow for a 3-day state visit.
There appears to be a gap in his itinerary on Wednesday afternoon.
Very unusually the British museum is shut for the day on Wednesday.
My guess is he will he will announce a loan of the Bayeux Tapestry.
President Macron arrives in the UK tomorrow for a 3-day state visit.
There appears to be a gap in his itinerary on Wednesday afternoon.
Very unusually the British museum is shut for the day on Wednesday.
My guess is he will he will announce a loan of the Bayeux Tapestry.
Have just finished listening to this excellent 20 part series on the 1945 General Election and its consequences, by David Runciman. If you are interested in electoral history, I thoroughly recommend it. With some insightful contributions on the political aspects from @robertsaunders.bsky.social
BBC Radio 4 - Politically, Postwar - Episode guide
All episodes of Postwar
www.bbc.co.uk
July 4, 2025 at 9:43 AM
Have just finished listening to this excellent 20 part series on the 1945 General Election and its consequences, by David Runciman. If you are interested in electoral history, I thoroughly recommend it. With some insightful contributions on the political aspects from @robertsaunders.bsky.social
The boundary between the West and East Divisions of Southend between 1955 and 2010 was a block further to the east in the vicinity of Roots Hall (Southend United's ground) than previously shown. This has had a small effect on the size of sub-Areas 27 & 28.
www.parlconst.org/new-constitu...
www.parlconst.org/new-constitu...
UK Parliamentary Constituencies - 15 Essex (South)
Click on any chart or table to open in a new page.
www.parlconst.org
June 25, 2025 at 2:54 PM
The boundary between the West and East Divisions of Southend between 1955 and 2010 was a block further to the east in the vicinity of Roots Hall (Southend United's ground) than previously shown. This has had a small effect on the size of sub-Areas 27 & 28.
www.parlconst.org/new-constitu...
www.parlconst.org/new-constitu...
In addition to the correction made recently, the 1917 Boundary Commission recommendations were not fully implemented for Forest of Dean, Gloucester and Stroud. Also, from 1918 to 1950 the area occupied by the County Mental Asylum was an exclave of Stroud constituency wholly within Gloucester.
UK Parliamentary Constituencies - 47 Gloucestershire
Click on any chart or table to open in a new page.
www.parlconst.org
June 24, 2025 at 3:38 PM
In addition to the correction made recently, the 1917 Boundary Commission recommendations were not fully implemented for Forest of Dean, Gloucester and Stroud. Also, from 1918 to 1950 the area occupied by the County Mental Asylum was an exclave of Stroud constituency wholly within Gloucester.
Over the past few months the website has been regularly updated with corrections identified by a number of correspondents. I am pleased to say that the backlog of these has finally been cleared.
I am sure there will be more in the future and all are listed on the website's changelog.
I am sure there will be more in the future and all are listed on the website's changelog.
UK Parliamentary Constituencies - Changelog
Log of changes to the parlconst.org website since 16th July 2024 - (most recent at the top).
Unfortunately, the table below is currently not displaying correctly in some versions of the Firefox browse...
www.parlconst.org
June 23, 2025 at 9:33 AM
Over the past few months the website has been regularly updated with corrections identified by a number of correspondents. I am pleased to say that the backlog of these has finally been cleared.
I am sure there will be more in the future and all are listed on the website's changelog.
I am sure there will be more in the future and all are listed on the website's changelog.
Catching up on some podcast listening. This episode explores whether the UN small area population estimates undercount rural areas. This data is used, although calibrated by the size of know transfers between constituencies, in the parlconst model to derive the size of historic transfers.
BBC Radio 4 - More or Less: Behind the Stats, Is the world’s population being miscounted?
Investigating if the global population is really 2 billion higher than previously thought
www.bbc.co.uk
June 22, 2025 at 2:29 PM
Catching up on some podcast listening. This episode explores whether the UN small area population estimates undercount rural areas. This data is used, although calibrated by the size of know transfers between constituencies, in the parlconst model to derive the size of historic transfers.
I don't usually post personal stuff from this account, but I thought I would share a salutary lesson for anyone who uses Microsoft Outlook for their email.
A thread: ...
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A thread: ...
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June 19, 2025 at 9:02 AM
I don't usually post personal stuff from this account, but I thought I would share a salutary lesson for anyone who uses Microsoft Outlook for their email.
A thread: ...
(1/6)
A thread: ...
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A new sub-Area 18 has been added to Area Map & Table 63a to reflect that the Wilderspool area of Warrington was in Knutsford constituency from 1885 to 1918.
www.parlconst.org/new-constituency-groups/north-west/63-cheshire
www.parlconst.org/new-constituency-groups/north-west/63-cheshire
UK Parliamentary Constituencies - 63 Cheshire
Click on any chart or table to open in a new page.
www.parlconst.org
June 16, 2025 at 5:45 PM
A new sub-Area 18 has been added to Area Map & Table 63a to reflect that the Wilderspool area of Warrington was in Knutsford constituency from 1885 to 1918.
www.parlconst.org/new-constituency-groups/north-west/63-cheshire
www.parlconst.org/new-constituency-groups/north-west/63-cheshire
The parish of Seaborough was in South Somerset from 1885 to 1918 before transferring to the West Dorset constituency, where it has remained ever since. Correcting this has created a new sub-Area 17 in the Dorset Area Map & Table.
www.parlconst.org/new-constituency-groups/south-west/52-dorset
www.parlconst.org/new-constituency-groups/south-west/52-dorset
UK Parliamentary Constituencies - 52 Dorset
Click on any chart or table to open in a new page.
www.parlconst.org
June 15, 2025 at 11:01 AM
The parish of Seaborough was in South Somerset from 1885 to 1918 before transferring to the West Dorset constituency, where it has remained ever since. Correcting this has created a new sub-Area 17 in the Dorset Area Map & Table.
www.parlconst.org/new-constituency-groups/south-west/52-dorset
www.parlconst.org/new-constituency-groups/south-west/52-dorset
The Rode Hill area of the village of Rode (formerly Road) was in Wiltshire until 1937 and Westbury constituency until 1950. Showing this correctly has created a new sub-Area 12 in Area Map & Table 49b.
www.parlconst.org/new-constituency-groups/south-west/49-somerset
www.parlconst.org/new-constituency-groups/south-west/49-somerset
UK Parliamentary Constituencies - 49 Somerset
Click on any chart or table to open in a new page.
www.parlconst.org
June 14, 2025 at 3:47 PM
The Rode Hill area of the village of Rode (formerly Road) was in Wiltshire until 1937 and Westbury constituency until 1950. Showing this correctly has created a new sub-Area 12 in Area Map & Table 49b.
www.parlconst.org/new-constituency-groups/south-west/49-somerset
www.parlconst.org/new-constituency-groups/south-west/49-somerset
A number of corrections have been made to boundaries in Gloucestershire. The most significant error was previously showing the 1918-1950 boundaries as recommended by the 1917 Boundary Commission, whereas the actual implementation had Tetbury RD in Cirencester & Tewkesbury and not in Stroud.
UK Parliamentary Constituencies - 47 Gloucestershire
Click on any chart or table to open in a new page.
www.parlconst.org
June 13, 2025 at 3:40 PM
A number of corrections have been made to boundaries in Gloucestershire. The most significant error was previously showing the 1918-1950 boundaries as recommended by the 1917 Boundary Commission, whereas the actual implementation had Tetbury RD in Cirencester & Tewkesbury and not in Stroud.
Between 1885 and 1918 the far north-western part of Malvern was in Herefordshire (Leominster constituency). This is now reflected in a new sub-Area 9 in Area Map & Table 45b.
parlconst.org/new-constituency-groups/west-midlands/45-herefordshire-and-worcestershire
parlconst.org/new-constituency-groups/west-midlands/45-herefordshire-and-worcestershire
UK Parliamentary Constituencies - 45 Herefordshire and Worcestershire
Click on any chart or table to open in a new page.
parlconst.org
June 8, 2025 at 4:01 PM
Between 1885 and 1918 the far north-western part of Malvern was in Herefordshire (Leominster constituency). This is now reflected in a new sub-Area 9 in Area Map & Table 45b.
parlconst.org/new-constituency-groups/west-midlands/45-herefordshire-and-worcestershire
parlconst.org/new-constituency-groups/west-midlands/45-herefordshire-and-worcestershire
A northern part of Newport in Shropshire had been in Staffordshire until the 1960s (and in Stafford & Stone constituency until 1974). Correcting this has created a new sub-Area 6 in the Shropshire Area Map & Table.
www.parlconst.org/new-constituency-groups/west-midlands/44-shropshire
www.parlconst.org/new-constituency-groups/west-midlands/44-shropshire
UK Parliamentary Constituencies - 44 Shropshire
Click on any chart or table to open in a new page.
www.parlconst.org
June 8, 2025 at 11:44 AM
A northern part of Newport in Shropshire had been in Staffordshire until the 1960s (and in Stafford & Stone constituency until 1974). Correcting this has created a new sub-Area 6 in the Shropshire Area Map & Table.
www.parlconst.org/new-constituency-groups/west-midlands/44-shropshire
www.parlconst.org/new-constituency-groups/west-midlands/44-shropshire
Upper Ipsley was created as a parish in 1894, being the part of Ipsley which joined Redditch UD. However it remained part of Warwickshire for parliamentary purposes until 1918. This was previously wrong on the website, but now remedied with a new sub-Area 20 in Area Map & Table 45c.
UK Parliamentary Constituencies - 45 Herefordshire and Worcestershire
Click on any chart or table to open in a new page.
www.parlconst.org
June 7, 2025 at 10:37 AM
Upper Ipsley was created as a parish in 1894, being the part of Ipsley which joined Redditch UD. However it remained part of Warwickshire for parliamentary purposes until 1918. This was previously wrong on the website, but now remedied with a new sub-Area 20 in Area Map & Table 45c.
The boundary maps on the @parlconst.bsky.social website were largely created by working backwards in time and noting changes. Problems sometimes arise when the constituent parts of constituency don't change in a review, but the boundaries of one or more of those parts has changed slightly.
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June 6, 2025 at 4:33 PM
The boundary maps on the @parlconst.bsky.social website were largely created by working backwards in time and noting changes. Problems sometimes arise when the constituent parts of constituency don't change in a review, but the boundaries of one or more of those parts has changed slightly.
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A new sub-Area 9 has been added to Area Map & Table 38d - Birmingham (South) to reflect the current couple of streets that would have been in Birmingham S constituency from 1885 - 1918 (not Worcestershire E) and then transferred to Birmingham Moseley in 1918.
www.parlconst.org/new-constitu...
www.parlconst.org/new-constitu...
UK Parliamentary Constituencies - 38 Birmingham
Click on any chart or table to open in a new page.
www.parlconst.org
June 4, 2025 at 9:55 AM
A new sub-Area 9 has been added to Area Map & Table 38d - Birmingham (South) to reflect the current couple of streets that would have been in Birmingham S constituency from 1885 - 1918 (not Worcestershire E) and then transferred to Birmingham Moseley in 1918.
www.parlconst.org/new-constitu...
www.parlconst.org/new-constitu...
There were an awful lot of very minor changes to county boundaries in the early 1990s. Have just finished three days solid work trying to make sure that Derbyshire's pre-1997 boundaries are shown correctly on the parlconst.org website.
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UK Parliamentary Constituencies
This website provides information on the changing composition of parliamentary constituencies in the United Kingdom since 1885. Have you ever wanted to know at a glance:
How constituencies created at...
parlconst.org
June 3, 2025 at 9:02 PM
There were an awful lot of very minor changes to county boundaries in the early 1990s. Have just finished three days solid work trying to make sure that Derbyshire's pre-1997 boundaries are shown correctly on the parlconst.org website.
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A question for those who download boundary datasets from the website.
Because of the way uMap (which hosts the zoomable maps) used to position the showing of the constituency name, the website maps (in England only) treat each detached part of a constituency as a separate feature.
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Because of the way uMap (which hosts the zoomable maps) used to position the showing of the constituency name, the website maps (in England only) treat each detached part of a constituency as a separate feature.
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June 2, 2025 at 10:46 AM
A question for those who download boundary datasets from the website.
Because of the way uMap (which hosts the zoomable maps) used to position the showing of the constituency name, the website maps (in England only) treat each detached part of a constituency as a separate feature.
(1/4)
Because of the way uMap (which hosts the zoomable maps) used to position the showing of the constituency name, the website maps (in England only) treat each detached part of a constituency as a separate feature.
(1/4)
Multiple minor corrections have been made to the website maps showing the boundary between Nottinghamshire and Yorkshire before 1997, mainly relating to the boundary of Bassetlaw constituency. In most cases these changes are too small to be reflected in the in the Area Maps & Tables.
UK Parliamentary Constituencies - England
There are separate pages for each the main periods for which different constituency boundaries existed:
1885 - 1918
1918 -1945
1945 - 1950
1950 - 1955
1955 - 1974
1974 - 1983
1983 - 1997
1997 - 2010
2...
www.parlconst.org
June 1, 2025 at 8:48 PM
Multiple minor corrections have been made to the website maps showing the boundary between Nottinghamshire and Yorkshire before 1997, mainly relating to the boundary of Bassetlaw constituency. In most cases these changes are too small to be reflected in the in the Area Maps & Tables.
I've always been impressed by @natlibscot.bsky.social maps, but today they really excelled. I noticed a technical problem with their website this morning, so I e-mailed them. Despite being Sunday, they replied just over half an hour later to apologise and to say that it had been fixed.
June 1, 2025 at 2:37 PM
I've always been impressed by @natlibscot.bsky.social maps, but today they really excelled. I noticed a technical problem with their website this morning, so I e-mailed them. Despite being Sunday, they replied just over half an hour later to apologise and to say that it had been fixed.