I received a letter from Civil Investigations at the weekend and found this forum before calling them. I then contacted DVLA in Swansea and its regarding an outstanding penalty for my vehicle which I hadnt road taxed for over six months ( this was about three years ago). I had moved and forgot to inform them of my new address. So they eventually passed my details onto this company to find me. Stupid thing is that I had contacted DVLA as soon as I realised that I hadnt paid my road tax so they had my new adress for the past two years. Why they need to use another company to chase me afterwards is a mystery to me.