Hi Lisa,
I am sorry for your struggles.
I think the first thing you need to do is to find a woman's shelter where you can go and be safe and make a plan. I live in Canada too, and in the city I live in, there are good resources for abused women to protect them and give them guidance. I hope you can find something similar in London. Call a Crisis Line or its equivalent and see what information you can get.
I hope you will keep reading and posting here and let us know how you are doing. You are definitely not alone in your struggles.