Explain and analyse the significance of three sources of the British Constitution.

The most ingrained source of the constitution in the UK is statute law. This refers to all laws made by Parliament, which are called Acts of Parliament. If Parliament vote for a change, it becomes a new law which alters the constitution. The examples of this are numerous but include the Fixed Term Parliaments Act 2011, which dictated that general elections could not be called tactically as they had previously been by governments. Statute law is therefore a highly significant source of the British Constitution.Another example of a constitutional source of the UK is authoritative literature. Unlike the US Constitution, the British Constitution is not written into a single document. Therefore, we rely on the expert opinions and writings of constitutional experts to refer to in times of need. A. V. Dicey's idea of twin pillars of the British Constitution, parliamentary sovereignty and rule of law, are used as reference points by politicians today in order to understand and explain the constitution. The significance of this source is that it is long-standing and referred back to when constitutional clarity is required.A final example of a UK constitutional source is European Union law. There are certain areas where EU law has been incorporated, and indeed even been sovereign, over UK law. Decisions by the European Court of Human Rights, agriculture and fisheries policy and the EU social charter have all been rigidly transferred into the UK Constitution. However, it is unclear what impact Brexit will have on EU law and its constitutional significance in the UK. It is, though, still significant, particularly as it has undermined parliamentary sovereignty by overruling statute law in several instances.