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Carl Baker

@carlbaker.bsky.social
633 followers 250 following 171 posts

Head of the Social and General Statistics team at the House of Commons Library in the UK Parliament. Personal account for posts on stats, maps, dataviz, games, travel, and misc.

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Carl Baker @carlbaker.bsky.social · 06/08/2026
Likely to be end of 2026/early 2027 - the full ward-level data publication always takes quite a while, partly because it's a collaboration with the Elections Centre at Exeter.
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Carl Baker @carlbaker.bsky.social · 06/08/2026
Now featuring an interactive map for the new local authority boundaries announced in July, plus a ward and parish lookup commonslibrary.parliament.uk/research-bri...
commonslibrary.parliament.uk
Proposed unitary authorities 2026: Maps
Maps of the new unitary authorities proposed by the Government in 2026.
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Carl Baker @carlbaker.bsky.social · 26/05/2026
Belatedly - added an interactive map of proposed new council boundaries in Norfolk, Suffolk, Essex and Hampshire to this briefing last week: commonslibrary.parliament.uk/research-bri...
commonslibrary.parliament.uk
Proposed unitary authorities 2026: Maps
Maps of the new unitary authorities proposed by the Government in 2026.
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Second Reading @commonslibrary.bsky.social · 20/05/2026
Who is responsible for public services in my constituency? commonslibrary.parliament.uk/public…
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Carl Baker @carlbaker.bsky.social · 11/05/2026
City and town classification of constituencies and local authorities - 2026 update with output area data commonslibrary.parliament.uk/research-bri...
commonslibrary.parliament.uk
City & Town Classification of Constituencies & Local Authorities
How do cities, large towns, small towns and villages differ from one another? Our new classification of constituencies and local authorities helps in understanding differences, trends and patterns of ...
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Carl Baker @carlbaker.bsky.social · 11/05/2026
City and town classification of constituencies and local authorities - 2026 update with output area data commonslibrary.parliament.uk/research-bri...
commonslibrary.parliament.uk
City & Town Classification of Constituencies & Local Authorities
How do cities, large towns, small towns and villages differ from one another? Our new classification of constituencies and local authorities helps in understanding differences, trends and patterns of ...
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Second Reading @commonslibrary.bsky.social · 16/04/2026
MP data - Parliamentary activities commonslibrary.parliament.uk/resear…
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Carl Baker @carlbaker.bsky.social · 16/04/2026
New Commons Library briefing: recent trends on Written parliamentary questions from MPs commonslibrary.parliament.uk/research-bri...
commonslibrary.parliament.uk
Written parliamentary questions from MPs: Recent trends
MPs can submit questions to government departments to scrutinise their work. The number of questions submitted by MPs increased by 93% between 2024 and 2025.
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Ross Mudie @rmudie96.bsky.social · 10/03/2026
We've built a data explorer for every neighbourhood receiving funding through the Pride in Place programme. You can map, zoom in, and compare every neighbourhood with data on deprivation, need, social capital, and social infrastructure. You can download it all It's completely free to use, too. 👇
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Carl Baker @carlbaker.bsky.social · 06/03/2026
We've published the 2025 local elections handbook in collaboration with the University of Exeter's Elections Centre. This includes ward- and candidate-level results from last year's locals. commonslibrary.parliament.uk/2025-local-e...
commonslibrary.parliament.uk
2025 Local Elections Handbook and dataset
Explore the 2025 local elections results and download a comprehensive results dataset for electoral districts and wards.
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Jim Pickard @pickardje.bsky.social · 08/02/2026
this year’s Wildlife Photographer exhibition is astounding, if you haven’t had a chance to see it yet
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Carl Baker @carlbaker.bsky.social · 27/01/2026
No official official list that I'm aware of
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Arthur C. Clerk's Mysterious World @fantasticlife.bsky.social · 18/12/2025
2005 notional general election results now live: electionresults.parliament.uk/general-elec... Another brick in the psephological wall.
electionresults.parliament.uk
UK Parliament election results: Notional results for a UK general election on 5 May 2005 - by party
Notional results for a general election to the Parliament of the United Kingdom on 5 May 2005 listed by political party.
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Cassie Barton @cassierbarton.bsky.social · 09/12/2025
The Commons Library is recruiting a housing policy researcher! As ever: highly recommended workplace, great people, interesting work, etc etc. Apply! housesofparliament.tal.net/vx/mobile-0/...
housesofparliament.tal.net
Housing Researcher - Houses of Parliament
Title: Housing Researcher. Employer: House of Commons. Salary: £43,614 - £50,374 per annum. Closes: 11/01/2026, 23:55
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Second Reading @commonslibrary.bsky.social · 06/11/2025
What is the Budget? commonslibrary.parliament.uk/what-i…
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Second Reading @commonslibrary.bsky.social · 06/11/2025
Constituency data - Indices of deprivation commonslibrary.parliament.uk/consti…
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Claire Sewell @clairesewell.bsky.social · 27/10/2025
The House of Commons Library Open Day returns in 2026! Come and learn about what we do to inform democracy and take advantage of a rare chance to tour the Commons Library space. Full details are on our website and applications close 24th November commonslibrary.parliament.uk/training-and...
commonslibrary.parliament.uk
House of Commons Library Open Day
We are pleased to invite librarians, library staff and information officers to the House of Commons Library Open Day 2026.
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Owen Boswarva @owenboswarva.bsky.social · 16/09/2025
Indefinite delay to the next release of detailed tables in the Valuation Office Agency's Council Tax Stock of Properties statistics – a valuable source of small area attributes for housing stock in England and Wales www.gov.uk/government/s... #UKhousing #govtech #proptech #opendata
3.5. Council Tax Stock of Properties
Added September 2025
The VOA has been moving its Council Tax work onto a new, modern, operating system. The data provision for statistics is also being updated and iterated as part of this work. As a result, we plan to release a shorter publication containing key headline stock figures for each billing authority, broken down by band, during autumn 2025, rather than the full suite of official statistics we typically publish. This means that tables on insertions, deletions and time series, will be available later, once the data provision updates are completed and assured for official statistics production.

We will provide a further update on the timeline for publishing insertions and deletions, as well as plans for changes and improvements to the overall publication, in due course.
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Arthur C. Clerk's Mysterious World @fantasticlife.bsky.social · 08/09/2025
In which we bid farewell to Professor Michael Rush. A kind, generous and gentle man. More notes from @anyaso.bsky.social and I: ukparliament.github.io/ontologies/m...
ukparliament.github.io
2025 - Week 36
Work in progress to design data models for UK Parliament
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David Firth @firthstat.bsky.social · 26/08/2025
At next week's RSS conference I'll be presenting a poster (a first for me...it's about time!) "Tetraplot displays of UK General Election results" shows how to graph GE 2024 vote shares across 4 parties in a useful way. Full PDF poster at: github.com/DavidFirth/t...
Image of a poster to be presented at the Royal Statistical Society conference in Edinburgh, September 2025.  The main point is to generalize the idea of a ternary plot to handle 4-part compositions, by showing views through the triangular faces of a tetrahedron.  The data shown are vote counts from England, Scotland and Wales in the UK General Election of July 2024.
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Arthur C. Clerk's Mysterious World @fantasticlife.bsky.social · 22/08/2025
Our psephological efforts now come complete with by-elections from Parliament 56. Or the one following the 2015 general election, as normal people might say electionresults.parliament.uk/parliament-p...
electionresults.parliament.uk
UK Parliament election results: 56th Parliament of the United Kingdom
The 56th Parliament of the United Kingdom.
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Arthur C. Clerk's Mysterious World @fantasticlife.bsky.social · 21/08/2025
New bot alert: if you’re the kind of person that likes @commonslibrary.bsky.social, you may also wish to spend a follow on @post-parliament.bsky.social. All the latest research from the Parliamentary Office of Science and Technology
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Second Reading @commonslibrary.bsky.social · 28/07/2025
Who is responsible for public services in my constituency? commonslibrary.parliament.uk/public…
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Carl Baker @carlbaker.bsky.social · 26/07/2025
Huh. Just discovered that a photo of mine (of the University of Michigan) is used on 6 English Wikipedia pages and a dozen in other languages. I forgot I ever uploaded it.
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Cassie Barton @cassierbarton.bsky.social · 25/07/2025
I first did the constituency analysis quite a few years ago, but it's been good to bring it up to date. Some interesting patterns.
How do leasehold transactions vary by constituency? An annotated map of the percentage of sales that were leasehold by constituency in 2024 in England and Wales. Annotations explain: 23% of residential property sales were leasehold in England and Wales in 2024. 98% of flats were sold leasehold, compared with only 6% of houses. There was also a lot of variation between constituencies. There were some leasehold 'hotspots' in areas where it's more common for houses to be sold leasehold, including parts of the North West and Yorkshire. Other hotspots are areas where flats make up a large proportion of overall sales, like central London.
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Cassie Barton @cassierbarton.bsky.social · 25/07/2025
I've published a new briefing bringing together the stats on leasehold housing in England (and a bit in Wales). Featuring: - MHCLG data on leasehold stock - Trends in transactions over time and for constituencies - Experiences of leaseholders commonslibrary.parliament.uk/research-bri...
commonslibrary.parliament.uk
Leasehold housing in England: Statistics
This briefing explores statistics on leasehold housing stock and transactions, in the context of ongoing reforms to the leasehold system.
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Sarah O'Connor @sarahoconnorft.ft.com · 22/07/2025
I've now written a piece about why the internet hates my apostrophe, which you can read here: www.ft.com/content/48d4... Huge thanks to everyone who replied to me about it!
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Carl Baker @carlbaker.bsky.social · 15/07/2025
Very off-topic - but worth noting that this kind of granular local authority data is not long for this world, with county/district areas set to merge up into larger unitaries. North Yorkshire/Cumbria LAs likely to be more typical of the future size. Has an impact on our local understanding.
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Khoa @khoavuumn.bsky.social · 14/07/2025
Using time series graphs to make causal claims be like
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Carl Baker @carlbaker.bsky.social · 09/07/2025
County council have now sent round a leaflet about this - almost entirely promoting their preferred two-council option, with only a cursory mention of the rival three-council option which is also being consulted on (that most districts support)
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Hetan Shah @hetanshah.bsky.social · 08/07/2025
I don’t get much engagement on my posts about stats but I’ll press on as I think its important. So it seems that we are about to have a lot of leadership churn with Robert Chote stepping down early as chair of the Stats Authority whilst they also appoint other key roles 😬 www.gov.uk/government/n...
Today we launch an internal expression of interest for this new Permanent Secretary role. It closes on 21 July. This will be open to existing Directors General and Permanent Secretaries. This vital role will be responsible for leading the ONS' operational business and restoring much needed trust and confidence in the department.
In parallel we have also begun the process to find the next National Statistician and will shortly appoint a search partner to support us on this critical appointment leading our national government statistical service.
Last month Sir Robert Chote informed the Cabinet Office of his intention to step down as UKSA Chair in the autumn to take up the role of President of Trinity College, Oxford. A campaign to appoint his successor will be launched within the next few weeks.
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House of Commons @houseofcommons.parliament.uk · 08/07/2025
Looking for information about your constituency? The Commons Library can help. Get the facts on key data for your local area, including population, house prices and broadband speeds. 🔎 Explore now: commonslibrary.parliament.uk/constituency...
Graphic of a search engine promoting House of Commons Library research.

Text reads:

Where can I find data statistics about my local area?
There’s a Library briefing for that.
Get the facts at commonslibrary.parliament.uk
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Sam Freedman @samfr.bsky.social · 07/07/2025
More than a quarter of people think MPs expenses are one of the top three costs for government. A higher % than think the same for pensions or education.
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Jim Waterson @jim.londoncentric.media · 05/07/2025
One of the strangest death rattles of corporate local newspapers has been the teams of “local journalists” employed to churn stories about Martin Lewis. So I gave Martin a ring to discuss the state of British news, plus where to buy chicken wings in London. www.londoncentric.media/p/martin-lew...
londoncentric.media
"A swamp of muck and crap": Martin Lewis on how journalism is broken
Plus: Is London getting new Bakerloo line trains after all and the property billionaire's £3m scaffolding bill.
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Carl Baker @carlbaker.bsky.social · 04/07/2025
Others may (like me) have missed that there is now a consultation underway on new local authority boundaries in Surrey. www.gov.uk/government/c...
gov.uk
Proposals for local government reorganisation in Surrey
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Owen Winter @owenwntr.bsky.social · 04/07/2025
From the England and Wales census, largest ethnic group by country of birth:
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Carl Baker @carlbaker.bsky.social · 01/07/2025
Working: "yes and I use one" on p161 divided by weighted base on p158. Base on p161 is just those who had a mobile in the household. www.ofcom.org.uk/siteassets/r...
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Carl Baker @carlbaker.bsky.social · 01/07/2025
Ofcom's Technology Tracker 2025 survey suggests that 78% of those aged 65+ said there was a smartphone in their home that they personally use. Those suggesting we are "near 100%" are exaggerating.
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Sarah O'Connor @sarahoconnorft.ft.com · 01/07/2025
The loud drumbeat that companies should "embrace AI now or be left behind" has more in common with high-pressure sales techniques than biz strategy. And that's fine - tech firms have something to sell. But the rest of us needn’t confuse it with anything more profound. www.ft.com/content/4688...
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Arthur C. Clerk's Mysterious World @fantasticlife.bsky.social · 30/06/2025
It's far too hot to leave your sofa. Why not empty a sack of ice into your nan's Radol Footspa and treat yourself to ten minutes with more weeknotes from @anyaso.bsky.social and I ukparliament.github.io/ontologies/m...
ukparliament.github.io
2025 - Week 25
Work in progress to design data models for UK Parliament
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Philip Brien @statisticalphil.bsky.social · 27/06/2025
Well, this is exciting - I've been grumbling for *years* about how figures at Budgets and Spending Reviews are only given to the nearest £100 million, which makes data analysis needlessly difficult. And the Treasury have just gone ahead and published the unrounded data! www.gov.uk/government/p...
gov.uk
Supporting documents for Spending Review 2025
Supporting documents alongside the main Spending Review 2025 document: distributional analysis, policy costings and data sources.
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Arthur C. Clerk's Mysterious World @fantasticlife.bsky.social · 20/06/2025
Fans of calculating scrutiny periods for instruments - statutory and treaty-like - will be delighted to learn that our beloved egg timer is reborn, this time with much improved information architecture api.parliament.uk/egg-timer
api.parliament.uk
Parliamentary time
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Carl Baker @carlbaker.bsky.social · 20/06/2025
I thought the suggestion might be "don't drive", but my bad. I'm sure it's the pedestrians.
Help Omiš beat its traffic problem by not crossing the street unnecessarily.
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Carl Baker @carlbaker.bsky.social · 13/06/2025
Walked past Michael Palin filming New Europe in the basement of Budapest's House of Terror museum. Too taken aback to say hello.
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Alex Hern @hern.bsky.social · 12/06/2025
RSS feeds were good weren’t they
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Carl Baker @carlbaker.bsky.social · 11/06/2025
"Additional funding has been provided primarily to allow UKSA to start preparatory work for Census 2031, subject to the government’s decision on the census, expected this summer." www.gov.uk/government/p...
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lastpositivist.bsky.social @lastpositivist.bsky.social · 11/06/2025
I simply do not concede that any of your cookie vendors' interests are legitimate.
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Carl Baker @carlbaker.bsky.social · 02/06/2025
I'd prefer each constituency as one feature, for what it's worth, but others may have different needs.
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Democracy Club @democracyclub.org.uk · 29/05/2025
🧑‍💻 The Electoral Commission are hiring a new Head of Digital Communications. The job's perks include working with us! View the details here: ce1002li.webitrent.com/ce1002li_web...
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