Mandelson private messages to be released today – UK politics live

Sources predict ‘toe-curling’ revelations as more than 1,000 pages of documents relating to his appointment as US ambassador to be published

• Mandelson files show no mitigation of security concerns

Here is Pippa Crerar and Henry Dyer’s explainer about what will be in the Mandelson files.

Good morning. Many people despair at the quality of governance in Britain at the moment, but in one respect we are living through a golden age; if you are interested in contemporary history, and learning about what actually happens at the heart of government, then you can now – sometimes – access the sort of information never available before.