Giving credit

[tod123]

We are a small business originally plumbers but now we have extended to a shop and we sell cookers fridges etc. also we still do plumbing work. We would like to offer credit facilities to our customers so that they can buy cookers, fridges and boilers etc. and pay monthly.
We don't have a licence or anything yet and we would like to know where we start. We can't finance this ourselves we would have to get the finance on behalf of the customers. Can anyone here point us to the right place? Thanks