Marantha, I am making the assumption that the late partner was ignorant/in denial enough to fail to make a will which would have made everyone's life clearer, easier and less expensive.
SGB, getting one's names on the deeds does not automatically mean you don't have to pay inheritance tax though, and doesn't address the pension issue, next of kin medical decisions, etc.
My point is really just DON'T assume things. Don't assume you will be protected just because it seems right and logical. There is no such thing as common law marriage.
But of course, we are mostly in agreement, because all I'm really saying is: women, please, be informed when you make your choices.
However, with more than 50% of children in the UK born out of wedlock, it does seem to me that the laws for co-habitees with children deserve re-thinking.
Perhaps the outcome of fresh thinking will simply be a big debate that informs the public just how vulnerable they might be should they shack up and make babies before getting hitched!