In her 20s, Elizabeth marries Prince Phillip and gives birth to Prince Charles. She continues to uphold her royal duties as her father's health declines, preparing her for a life as monarch.
This episode charts Princess Elizabeth's eventful upbringing, from her birth in 1926 through to her formative years in the Auxiliary Territorial Service
A compelling view of Queen Elizabeth II's early life, as revealed by previously unseen photographs, video archive and expert testimony