In what way might the creditor be liable? Let me guess what you mean.
A proposes to lend B money to buy stuff from C. A is the creditor, B the debtor, and C the supplier.
The stuff turns out to be faulty and C decides to be difficult about giving B his money back. Under the Consumer Credit Act, if A is a credit card company, it can be jointly liable with C. However, CCCs generally make such a huge profit that they self-insure for this kind of thing, which after all is really C's problem, not A's. All the CCA really does is try to make life less difficult for B by in effect forcing A to put pressure on C.
If A is a private individual it's unlikely the CCA would apply, and if A is a budding small-time loan shark, I think he would have some rather unorthodox insurance arrangements already.
So what kind of liability are you thinking of?