I want to bring girlfriend to england from ghana

What's stopping you? Have you met before?

Are you british national? Is it for a short visit? She will need to apply for visa at british embassy in Ghana.

Don't send her any money.

Of course, when you say girlfriend, I am sure this is a person you have meet in person, been to her home, and so on.

Since you must be aware that Ghana is the biggest and most well know place for dating fraud.

Women ( or people claiming to be women) ask for all sort of money, they ask for 1000's for a 300 dollar visa and passport, then they ask for 10's of thousand for money to leave the country, that is not required.

And of course since most are just fake names and photos, they never show up and you are just out your money.

So I am sure you know all of this, since this dating scheme was even on Oprah and any type of search will show 1000's of pages of people scammed.