Identify your field and possible institutions first, then tackle the funding next.
Look at the research pages of the relevant departments of universities you might be interested in. They will provide details of what they are doing/what opportunities there are for PhD research. Follow their directions of how to apply, and what to do if you are an overseas student. If you want to study in the UK/USA, you must have a very good standard of spoken/written English to get through the challenges of academic life.