Cleland Thom are well known for their journalism courses but they're not cheap. The full professional training course is �495 but they do a freelance course at �150. It's worth remembering, of course, that you don't need any qualifications for journalism; if your writing is good enough it will sell anyway. (I started freelance writing when I was 14 but it was another 30 years before I decided to go on a course. That was before the days of online courses so it meant a 150 mile round trip to evening classes every week!).
The Cleland Thom site is here:
http://www.ctjts.com/
Chris