Debt Collection unpaid invoice from March 2012

I invoiced this client when my business was really new and since completing the website over 10 months ago, I never hear back from the client.

I am surprised, they are a law firm, he is either on holiday (every month), is ill, is in the process of transferring the money.

I am even more surprised as its only for £250.

I have attatched my terms and conditions, I wonder if I can get more in terms of interest.

Although I would be happy with the amount owed.