Explainers
Our explainers cover key subjects relating to our work, setting out key facts and figures and answering the most important questions about government.
Explore our explainers
Devolution to Cheshire and Warrington
On 6 May 2027, voters will elect the first mayor of Cheshire and Warrington.
Irish reunification
What is a border poll? What would happen if Northern Ireland and the Republic of Ireland voted in favour of reunification?
Current UK fiscal rules
What are the government’s current fiscal rules and is it on track to meet them?
Public financial institutions
Public financial institutions (PuFins) can invest public funds and “crowd in” private investment. But what are they?
Devolution to Cambridgeshire and Peterborough
Who is the mayor of Cambridgeshire and Peterborough and what do they do?
Jackdaw and Rosebank
What are Jackdaw and Rosebank, and what position has the government taken on North Sea licences?
By-elections since the 2024 general election
Seven by-elections have taken place since the 2024 general election, the most recent of which took place in Holborn and St Pancras on 8 October 2026.