Britglish questions!

Oh flist--can you help me? (it's for a fic)

Those things on the roof that channel off water but tend to get clogged with leaves? In the US we call them gutters--is it the same in England?

And: a man and a woman who aren't married but live together in an established relationship? In the US the legalish term is "domestic partners"--is it the same in the UK?

thank you thank you thank you