Passport referee

Hi everyone,

I wonder if someone could tell me how many referees I do need when filling the UK passport application form, I have to say I do not have the application form in my hands at the moment and therefore I am not sure whether I need only one referee or two, your advice would be appreciated. Thank you.

You need one referee who must be a professional and must know you for at least two years.

Thank you so much for your reply.