Hello lovely. A total and utter shock for you, I'm sure. As someone who is surviving a similar experience, you might find some of the advice below helpful in getting through the brutal first few weeks when you don't know which way is up.
Firstly, tell as many people as you can as quickly as you can. You might feel like a beacon of humiliation, but right now you need to get a support team in place. This includes neighbours (you barely know!), friends in London, family etc. You'll be utterly astonished in the coming weeks at who rallies around to help you. You're going to need it but it will give you your first understanding that there are a ton of decent people in the world. No one will laugh at you, most will be trying to find ways to hep you in some way. Your husband is not one of them. More likely, he's a schemer, a liar, and quite possibly a cheat.
Get yourself to a solicitor's as quickly as you can. This feels like an act of treachery, however, he's already controlling the money and leaving you high and dry. His next step will be to talk about his rights. He will omit to acknowledge you have any. Don't panic if you suddenly discover he's removed all the documents from your home and you haven't noticed. If you don't think you can face this right now, can I just point out that seeing a solicitor is not a commitment to divorce - merely getting yourself an education. Likewise, head off to the CAB to check you're getting all the benefits you can.
Thirdly, it really isn't you that's done anything wrong. You might think otherwise, but you haven't. You will agonise over 'why' and 'what you could have done differently'. The only thing you could have done differently is not marry him in the first place.
Next, I'll say it although I don't think any of us have managed this: eat well, sleep frequently and get out and about as much as possible. Best not turn to the alcohol either...A GP can advise you on any suitable medicine to help anxiety, sleep disorders etc. In a few months time, ask for counselling (it's probably too soon right now to really benefit from it).
Finally, I'm not going to lie to you - this is a shocking experience and you'll experience emotions you didn't even realise someone was capable of feeling. They don't last forever. I promise you that. You will also learn you're a much more able, resilient, stronger person than you realised. It's just such a dreadful way of learning that about yourself.