Plot hole: In "Aliens of London" it is established on a 'missing person' poster that Rose Tyler is approximately 19 years of age in March 2005 (The poster says 'missing since 6 March 2005'). This means that she must have been born prior to March 1986. However, in 'Father's Day', which is dated 7 November 1987, Rose is still a baby in her mother's arms - but she should be a toddler aged approx two.