I have another question, please.
When coming to the end of my application, it lists all documents to send.
I am puzzled about "Referees statements."
Am I supposed to ask them to write a statement?
It's just the referee form that you print and have them fill out. It asks:
Name of applicant; then referee's title (Mr/Ms/Mrs/Miss, etc), given name(s), family name, gender, DOB, address, whether referee has lived at this address for the past 3 years (if not, list previous address(es), phone number, email address, referee's profession, whether referee has a British passport (if yes, give the passport number), and how the referee knows the applicant. They'll provide their full name, sign it, and date it. That's it for "statement".
By signing it, they're affirming that they are eligible to be a referee and that you are who you say you are. So, it technically
is a statement. But they don't have to write anything out except how they know you.