Santander will accept a screenshot of the confirmation from UCAS. DD has an appointment booked with them in case she can't change her account online, but hopefully all should be ok.
@NewModelArmyMayhem18 check with your existing house contents insurer if you have one. I was about to take out a policy when DD1 was heading off to uni 2 years ago. I rang our existing insurer, NFU, to see how much they charged and was very happy to discover that as long as she is in university-owned accommodation and her room is kept locked, all her possessions including her bike are already covered. As she's at Cambridge in a college which provides accommodation for the full 4 years, we're very happy. DD2 will be heading elsewhere, but in her first year at least, she too will be covered.
Sorry, joining this thread rather late in the day. DD2 has an unconditional offer, so Thursday is not looming for her as it did for DD1. However, she suffered a nasty injury at work involving a wine glass and late night (Friday) trip to A&E so is a bit fed up that she can't work or drive this week and her previous good if tired mood has dropped to being a stroppy mare again, rather like when A levels were happening...!