If there is anybody out there, that is desperate for help with the violent husband, or even wife, don't worry there is protection available if it is needed.
Do not take abuse lightly, report it immediately.
Home Office rules state that any foreign national whose marriage breaks up within two years because of domestic violence can apply for indefinite leave to remain, but they must have reported the incident at the time to a person in authority - such as a GP or police officer.
http://news.bbc.co.uk/1/hi/uk/8566102.stm