Can I claim Bank Charges on a Loan

[nazayub]

In 2001/2002 I took out a loan of £7500 with HFC bank with PPI. A year later I lost my business and suffered huge financial loss. Because there was insurance on the loan that paid for me for a year and after that I had to continue to pay loan. I didn't have job and therefore I was always in arrears in payments hence the bank charges started adding up. The £7500 loan became £19000 debt. Later I found out that the bank had sold my loan off to a solicitors firm which I was not aware off. Anyway, I am still paying the minimum (£30 a month) every month. My question is, am I entitle to claim on the bank charges HFC had added on to my loan?