Lulu (in-universe)

Lulu was a singer. In 1968 she appeared on Timothy Vee's The Tee Vee Show to perform her new single. (AUDIO: The Age of Revolution)

In 1969, Martha Jones and the Tenth Doctor watched Lulu win Eurovision with her song "Boom Bang-a-Bang". (PROSE: Martha Jones' MySpace blog) That 12 November, a newborn Paul Magrs dreamt that Lulu attended a party hosted by Dr Oho, and she and Cilla Black sang Step Inside Love. (PROSE: In the Sixties)

At some point by 1974, Lulu met Flo, a waitress who was worked at the Nadir Motorway Service Station. (AUDIO: Horror of Glam Rock)

Information from non-valid sources
Lulu served as a judge, alongside Graham Norton and Sam Ryder, for the Eurovision Song Contest 2023 auditions. (TV: 2023: The Eurovision Audition Tapes)