You can go to your local county court and get an N1 claim form. You dont need a soliciter for this. There will be a fee to log the claim. Fee is sometimes waived if your out of work or suffering financial hardship. If you use a soliciter you wont get his fee,s back. You need to send a letter to the defendent giving him 7 days to pay up,and telling them you intend to take them to court if they dont pay up. keep copies of letters and claim forms. Failing this i'd stick the pair of them with a butt.