Rule one is talk to them I am sure they will let you pay interest only if you need to. Even if they say no, do it anyway, they will accept anything you pay and action from them is more difficult if you can demonstrate that you are trying to pay. Do not bury head in the sand, that would be very very costly. Get the sort code/account details and pay what you can when you can. As a second charge they alone would find it very difficult to force a reposession order but that doesn't mean they can't make life very uncomfortable.