So, this is the second house we have bought but with our old house when the fixed term ended on the mortgage we didn't fix again as it cheaper for us to stay on the basic rate at the time so I have little experience with switching deals. So my question is, when our current deal ends in a few months time, if we stay and fix with our current lender (Nationwide) will we have to provide bank statements, salary info all over again or is it easy just to switch? I can't find anything online to answer this question. Thank you