HI Matt
UC would only be interested in amounts over £6000. I expect that a bank is not going to loan someone on UC more than that though I would be interested to find out for sure. If the loan were to increase your total savings to more than £6000 you would not be penalised if you spent the loan in the same monthly Assessment Period in which you received it.
David
Nothing on this board constitutes legal advice - always consult a professional about specific problems 
