Lisa
When we done it. We went to the small claims court. You can charge interest from the day the money was owed until the day that you issue the summons. For us it worked out about £80.00. I think it was bout 5-8 % can not remember the exact percentage. Call your local crown court and they will send you all the paper work. But i forgot to tell you last time. That you need to send them a recorded delivery stating that is they do not pay within 7 days, then you will issue a court summons. It does not matter if he is not there or even if the recorded delivery comes back to you. As long as you have done this then you are covered.
Kirsty