You mean you are counternamed on an AST?
It depends what you have signed.
If it is an AST then you are jointly and separately liable for rent and damages.
If it is a guarantee then you would be liable for anything arising from his liability.
It is quite unlikely to be a guarantee though because that wouldn't require you to live there or be valid if you did.
If it is an AST then it really doesn't matter whether you live there or not.
Similarly there isnt much that could be achieved if you had the details of the landlord. Whatever it is that you have signed cannot be undone even if you contact the landlord.
Can I clarify anything for you?
No, if this were an AST you would be liable whether you moved out or not.
you would be jointly and separately liable for the length of time of an AST.
Liability cannot be avoided by moving out.
As I have said, if this is an AST then the only way to terminate lawfully is to let the agreement run it's course and not renew.
Similarly, as I have said, it doesn't matter whether you live there or not.
I'm really sorry but I am not going to be able to tell you that you can escape from liability on this basis.
I'm afraid neither of those pieces of legislation apply.
You do have the right to know who your landlord is but you cannot give notice for the reasons above.
I'm afraid claiming domestic abuse has very limited effect upon liability in contract.
I see you have opened another question on the same point so I will leave this to the other expert.