What sort of preparation should I be doing before Oxbridge law interviews?

Two key things I would encourage anyone preparing for Oxbridge interviews to do would be: to know your personal statement inside out and to demonstrate your interest in the subject during the interview. You can demonstrate your interest in the subject in a number of ways, such as talking about further reading you have done and being able to discuss one or two current legal issues that you have seen in the news. Furthermore, make sure that you have actually read and can talk about any law-related books you mention in your personal statement. Ensure that you can back up any opinions or ideas that you have expressed in your personal statement and explain why you hold those opinions. This is a key way to demonstrate your ability to engage in critical analysis, which is an important skill you will need in order to thrive at Oxbridge.