Hi there,
To my knowledge, if you are leaving an abusive relationship then the Local Housing Authority do have a duty of care to help you, however, they need proof of the domestic abuse, usually by way of referrals from the Police or DA Services. If things are bad have you considered going to a refuge?
When you say you haven’t been home for 12 months, do you mean home in the UK (having returned from abroad) or back to your address you share with your partner? Regardless of this, it should not apply if you are suffering physical abuse.