Q&A: EU crime and justice opt-out

The government wants to opt-out of all pre-Lisbon police and criminal justice matters

The UK is considering opting out of EU measures on crime and policing. Here is a guide to the issue:

What is the UK opt-out on crime and policing?

Why is it being discussed now?

What does the government want to do?

What would be affected if Britain chose to opt-out?

Do the Conservative and Liberal Democrats agree?

What does Labour say?

What does the legal profession think about the opt-out?

What happens next?