Tristan Hotham
Data stories

Questions about Britain and the world, mapped

Interactive studies of the past, places, politics, everyday life and the weather, in Britain, across Europe and around the world, built from open data. Search your town, drag a slider, switch a layer. Every study has a write-up on the blog and its data and code on GitHub and Zenodo.

Every study

Early modern and modern

A day from London

How far a traveller leaving London at dawn could get in a day in 1750, the 1830s, 1850, 1910 and today: from about 5% of Great Britain's land to almost all of it.

No studies match that search.

From the research

Alongside the maps I write papers on parties, leaders and campaigns online. Every one is open, in the research hub.

Data studies kept as papers

  • Does a Local MP Get a Local Bonus? 31,737 MP returns since 1832: MPs born within 25 km of their seat win about 1.3 points more of the vote, but are defeated just as often.
  • Does Rain Keep Britain at Home? Rain while the polls were open at 22 UK general elections since 1945: turnout about a tenth of a point lower per millimetre, but not established.
See all research