Hey there, I've moved your post to a new thread as that thread was 5 years old so certain things have changed since then! AS levels now do not count towards the full A level and usually you will study 3 full A levels or equivalent before you go to uni. Typically sixth forms require GCSEs at least 5A*-C or 9-4s with Bs/6s in the subjects you wish to study although some have higher requirements