Normal
Someone who has known you for more than five years, and on a level that can talk about your character and personality. Ideally someone who works in a profession connected or related to the industry you are applying to, or who works in a professional/office working environment (eg manager level in the type of organisation that might be a client of the firm you are applying to). Alternatively someone in a recognised profession, eg teacher, nurse, accountant, surveyor, dentist, civil servant.