Zero - what are you going to do today? What can you do? Is there anyway you can try WA, SS, HV, GP, the local police to ask about domestic violence support?
When you first posted, you posted in the third person, you could always do that again with the police if you'd rather not tell them your details at this point?
You don't have to give your name, you can remain completely anonymous.
You HAVE TO do something to push this date (21st) out of the way and make your lives safer NOW.
Like ThereGoesTheFear said, the date seems to be holding you back or giving you time to deal the deal in your own mind but, like her, your hand is being forced each time he talks to you like that, threatens you. She has been in your shoes so listen to her.
As I said to you too, he will up the ante if he suspects you are making plans to leave so you need to act quickly, just get the essentials, documents, clothes and money. Any photo albums that you want to take.
Don't focus on moving him out, focus on making you safe!
You could have him arrested for threats to kill right now.
The police have met people like him so many times. They know how he thinks, they know that cards he'll play, they know the lies he'll tell. They will believe and protect you.
E-mail Women's Aid and ask them to call you. Go out with your friend and then use that time to make plans.
What are you going to do?