Yes he can - but be aware that if the British woman is not Muslim there can be consequences she would not expect from marrying a Christian.
Yes he can if she is christian,if not he can't
They can marry absolutely any girl. Muslim or Christian. I'm not sure about Jews though...
Though it's different for the female Muslim. She must marry a Muslim man.
Yes, if he renounces his silly little faith and lives by our customs and laws
Aslam-o-Aleykum. Ofcourse, Muslim man can marry a british female. There are importance to know before getting marry a non-beliver female. Those importance can be known ony by a muslim religious teacher(Aalm-e-Deen), Because He knows better about the rights of Muslim-non muslim marriage. Thanx