Does Gce o level take you to enter a college in the UK?

No, GCE O Levels alone are generally not sufficient to enter a college (further education) or university in the UK. They are a secondary school qualification. UK colleges and universities typically require A Levels (or equivalent qualifications like the International Baccalaureate) for undergraduate entry. Some further education colleges might accept O Levels for certain vocational courses, but it's not the norm for university entry.