In the concluding part of this documentary, Jo Whiley finds out how despite being cancelled by the BBC, the combination of a rabid fan base, a drinks party and a forgotten BBC Sitcom combined to help bring one of Britain's greatest cultural institutions back to our screens.

Along the way we hear never before heard tales from the teams behind the hugely successful reboot including Russell T Davies, Steven Moffat and Chris Chibnall, plus Doctors and companions past and present including Matt Smith, David Tennant, Jodie Whittaker, Christopher Eccleston, Peter Capaldi, Sophie Aldred, Bonnie Langford, Ncuti Gatwa, Sylvester McCoy, Matt Lucas, John Simm, Billie Piper and Kylie.