Injunctions

Questions:

How do I get an injunction against my ex-partner and how much does it cost?
Someone has put a video/photograph of me on the internet/is showing video footage of me in a compromising position to friends etc., without my permission, what can I do?
Will the police get an injunction for me?

I want to dispose of some kitchen knives can you tell me how to do this safely?

For police non-emergencies dial 101