My girlfriend applied to Combined Honours in Arts at Durham at first.
She wanted to transfer to History. The only reason she applied to the Combined Honours course was in order to do a mix of History and Politics modules, but she decided she's not that great a fan of Politics anymore, so she attempted to change to straight history.
Unfortunately, Durham rejected her request to change course, and she no longer wants to go to Durham if she has to do the combined course.
She's really quite upset about the rejection, especially after actually being accepted. So yeah, it doesn't always end well...