What marks do I need to achieve an A* grade in A-level Maths?

The A* grade in Maths is awarded to candidates who achieve an A (480 out of 600 UMS) in their overall A Level as well as achieving a combined score of 180 out of 200 UMS in modules Core 3 and Core 4 (i.e. an average of 90% in C3 and C4). This only applies to A Level Maths.
N.B. A Uniform Mark Scale, or UMS, is a way of standardising the marking of papers across different examination boards, allowing someone to compare two marks marked by two different examination boards. Grades are then calculated using grade boundaries set at particular UMS scores.