Northern Ireland: border polls
The UK Secretary of State has the power to hold a border poll. They must hold one if they think a majority of people in Northern Ireland favour a united Ireland.

An introduction to devolution in the UK. House of Commons Library Research Paper 03/84.
Introduction to devolution in the UK (286 KB , PDF)
This research paper has been superseded by Library briefing 08599, Introduction to Devolution in the UK.
Introduction to devolution in the UK (286 KB , PDF)
The UK Secretary of State has the power to hold a border poll. They must hold one if they think a majority of people in Northern Ireland favour a united Ireland.
A briefing paper which "maps" (or summarises) the main elements of the United Kingdom's uncodified constitution.
This briefing looks at the independent review of the Windsor Framework commissioned by the government and democratic oversight of the Framework