The Cabinet Office have published a book they calling the Draft Cabinet Manual.
You can download a PDF of it.
Here’s a bit of churnalism from the press release.
The Cabinet Office has published a draft Cabinet Manual which sets out the main laws, rules and conventions affecting the conduct and operation of Government.
The Manual gives an overview of the UK system of Government, including how the Executive – the Government and the Civil Service – relates to Her Majesty the Queen, devolved administrations and international institutions such as the European Union (EU).
It reflects the importance of Parliament and Cabinet government, and the democratic nature of the UK’s constitutional arrangements.
The manual is primarily intended to provide a guide for members of Cabinet, other Ministers, and Civil Servants in the carrying out of government business, but will also serve to bring greater transparency about the mechanisms of Government, informing the public whom the government serves.
The Cabinet Manual has been published in draft and comments are welcomed by 8 March 2011 and can be sent to: email@example.com[email protected]