Simon
You need to get face to face advice before making any Decisions to understand how your benefits will be affected by your living together.
Do an internet search for "welfare advice" with your postcode, town or county.
Unless you partner has a qualifying benefit themselves, which you do not mention, you cannot claim Carers Allowance against your own awards.
Gordon
Nothing on this board constitutes legal advice - always consult a professional about specific problems 
