Help needed with court papers from Lowell Portfolio re Lloyds TSB

[SweetRita]

Hello, I am looking for advise urgently. I have received court papers from Lowell Portfolio regarding an 6 year old debt. This debt was a loan for home improvements that I took out on an old property we bought in Yorkshire. I was with my boyfriend at the time but the loan was in my name. We lost the property as we could not afford the mortgage payment and the loan payments. We were advised at the time the property would be sold and any monies left over would be paid to Lloyds TSB. My boyfriend and I have separated and I now share a flat in London. I have had no correspondence with Lloyds TSB or Lowell until I received a court summons. I believe the debt was originally £5000, the court papers are for £ 6911.41 including solicitors fees and court fee, they have also applied for interest at a daily rate of £1.38. In the particulars of claim they make this statement:- This unsecured loan between Lloyds Tsb and the defendant under account reference 100089509621 and assigned to the claimant on the 30/06/2013 notice of which was given to the defendant? I have no idea what the statement means. Please can you advise me what to do next. I have been given a template pointing out the Limitations Act, should I use this. Sorry its so long, im really out of my depth with this and vary scared.