- You can drop out usually in the first 4 weeks and not pay tuition fees (although this varies between unis
- You can switch courses internally, usually up to the first three weeks of actually starting at the uni
- Some universities have even more flexibility and allow you to change course after first year (eg Lancaster). But there are some limitations around this and it's not applicable to every course.
- You can switch courses and unis through clearing (clearing usually lasts up to two weeks, but most spots will fill up in the first few days) - it's not just for if you do worse than expected. I changed from York to Manchester, both had the same entry requirements for their courses
- It is completely normal to be unsure of your course/choices in general. I'm in second year now and still know so many people that are unsure and have changed courses, either restarting or to a different course in their department (allowing them to not have to retake a year)