What percentage do you need to get a first class honours degree?

There's no single percentage that guarantees a First-Class Honours degree. The required percentage varies significantly depending on:

* University: Different universities have different grading systems and standards.

* Department/Subject: Even within a university, different departments might have different marking schemes and expectations.

* Year of Study: Grading criteria can change slightly from year to year.

While a general guideline might suggest something above 70%, you should always consult your university's specific grading criteria for your course. This information is usually available in student handbooks or on the university's website.