Hey there PTSDiskillingme, I don't know about the UK but here in the USA there is marital/spousal rape, and it is very much illegal. Regardless of relationship or marital status, if one person is coerced through violence or through threats into sex when they don't want it, it is still abuse and rape. Since UK and US law are very similar I would think there is some law against it there as well. I couldn't pretend to know what the police would do, though.

I'm sorry that happened to you, nobody should have that happen to them. Are you seeing a therapist, or considering seeing one? I think it'd be beneficial for you.