Mrs Raven (Geraldine McNulty), is the sociopathic, sadistic, misanthropic receptionist at the Northolt Health Centre. She has a sadomasochistic relationship with Arnie, has "demonic" triplets from a previous marriage (where she claims her wedding vows were "No retreat, no surrender".) Mrs, Raven often makes snide comments about people while they are present, and seems to pride herself on scaring away potential patients. She often gets the better of her boss, Piers usually through blackmail or similar methods. She is rarely overly mean to Janet, however, and the two women have oddly managed to form a genuine friendship. Mrs. Raven reveals to Janet that prior to being a receptionist, she was a prison warden.