On 5th July, the House of Commons Library published a briefing paper which explains that the Crown Dependencies are the Bailiwick of Jersey, the Bailiwick of Guernsey (which includes Alderney and Sark) and the Isle of Man. They are not part of the UK but are self-governing dependencies of the Crown. This means they have their own directly elected legislative assemblies, administrative, fiscal and legal systems. The briefing paper examines the constitutional status of the Crown Dependencies, their history and governance, as well as relations with the UK, international treaties and the impact of Brexit.
https://researchbriefings.files.parliament.uk/documents/CBP-8611/CBP-8611.pdf
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