Hello
My Wife did hers in Luton last month and it was pretty straightforward. They did 1:1 training and when they thought she was ready they did the test and she passed.
All in we had to pay £250 including the training but we got the certificate the following week which was good..
I dont think its too hard - lots of videos on YouTube showing what you have to do so take a look;
http://www.youtube.com/watch?v=ITn76A73QOI
Good luck!
Tone