Don't pay it you will get a few letters saying they are taking you to court but I just binned them in e past
http://youtu.be/XAIcdi9niHAfrom the comments below the video....
I didn't bother opening the 2nd letter they sent me. I just drew a fist with the middle finger pointing upwards on the front of the envelope, and sent it back to 'em. If they send me a third, they'll get a drawing of a fist with two fingers pointing upwards.