I am filling in the EAS form for Commonwealth Shared Scholarship (I am an offer holder for Cambridge LLM). It requires references from three people.

"List the names and positions of three referees who are qualified to comment on both your capacity to benefit from your proposed study in the UK and your ability to deliver development impact afterwards. One of your referees must be able to provide a reference in a personal rather than a professional capacity. You must seek prior permission from all the referees you list in your application.

Some examples of a referee's relationship to you are Supervisor at work, Personal referee and Master’s supervisor"

Can someone please explain who do you use as a personal referee? I have added one professor and one employer.

The idea of a "personal" referee depends a lot on the individual candidate. In particular, it depends on what you have done in your life and your career, and what relationships or connections you have built.

In general, the best personal referees are people who know you well, and can speak with authority about your character and motivation (not just your academic or professional skills).

If you have done any voluntary/community work, or have been part of some kind of committee or society, that is usually a good place to go. A teacher who knows you well may be suitable, but the "knows you well" part is important: it should be somebody who can say more than just "XYZ was a good student who did well in exams".

Again, the most important thing is that they are a person who can speak about your character. And I suggest that you tell your referee that you are asking them to attest to your character or personal attributes. (Indeed, it is always a good rule to explain to any potential referee why you are asking them to provide a reference, because this will help them to understand their role in your application.)