In our family, all three children applied to Durham as one of their choices.
DC1 applied in year 13, including Oxford and Durham. Rejected from Oxford, accepted offer from Durham, but then decided to take gap year and try again for Oxford with grades in hand. This of course required a second round of UCAS, Durham was again put down as a choice. She was successful this time round at Oxford (despite her achieved grades being less stellar than her predictions!), but Durham rejected her. Went to Oxford.
DC2 applied in year 13, including Oxford, Durham and Warwick. Rejected from former two, accepted offer from Warwick. Decided to take gap year to reapply to all three. Rejected again from Oxford, and from Warwick....offer from Durham in March. Went to Durham.
DC3 applied in year 13, including Oxford and Durham. Pulled out of Oxford when invited for interview due to ongoing chronic health issue. Offer from Durham accepted. After A2s wrote to Durham to ask to defer a year to try to resolve health issues. They were entirely happy to do so. Went to Durham after gap year, health issues flared back up very early on, Durham happy to defer entry for another year, no need to reapply again, even though she was able to make another application through UCAS to universities closer to home. Got offers from all of them. In May decided to accept a London option and reject Durham.
Point of all that was to show that there is absolutely no certainty from one year to the next as to whether you will get an offer and that the TantalisingDuck family is a glutton for punishment with UCAS - 6 applications between 3 children! Don't think any of them regretted their year off, it variously enabled much more non-curricular reading and prep for the Oxford applications, involved learning a language, travel and work and a breather from health issues.....