There is debate among lawyers on whether the process for a Brexit, once begun, can be stopped.
How does the UK go about disentangling itself from EU laws?
The key issue here is how to interpret Article 50 of the EU Treaty, which sets out the procedure for a member state to withdraw from the EU.
Brexit begins. Here's a primer on the laws at play in the UK's withdrawal process from the EU.
Article 50 looks deceptively simple but the reality will be anything but that. Here's what's laid out in the law if the UK votes for a Brexit.