Long story short, I've been through some horrific DV and of course I've not got enough evidence, witnesses because this stuff happens in public right? 
I've escaped, I'm living away from him. But the court system has let me down and basically I'm going to be meeting him for child handovers soon.
Can I ask first am I being unreasonable for investing what little money I have in some kind of action camera?
Could anyone also recommend one?
I've been looking at dash cams and then thought well no it's not protective enough so now I'm looking at a wearable action camera.
Note- I have been assaulted by him AND his family. So ideally I've no idea what to do to be quite honest but some kinda camera I can wear seems practical???