Stiknruda,
You can still do the UK CPL exams without doing an official course, but the UK exams end in June and you need a full pass by then.
It seems like a lot of cramming, but I decided to go this route and managed 13 out of 15 passes after a couple of months self-study, so assuming I pass the remaining re-sits will have saved about £1500 against doing a JAR correspondence course.
It depends on your personal situations and priorities, but it may be worth having a go.