Kay’s partner, who is portrayed as supportive and understanding despite the strain that Kay’s medical career places on their relationship.

Kay’s best friend, a non-medic whose life path contrasts with Kay’s demanding career, highlighting the different experiences and opportunities outside the medical field.

The younger brother of one of Kay’s friends, who relies on Kay for informal counseling, illustrating the extension of Kay’s role as a doctor beyond the workplace.

A self-important consultant in the NHS, representing the hierarchy and inequalities within the medical system, often avoiding the day-to-day stresses faced by junior staff.