Elton John
From Tardis Wiki, the free Doctor Who reference
Peri disdainfully likened a statue of Eros she had recently seen to the visage of singer Elton John. (DW: Planet of Fire)
A short clip of Elton John in the 1970s is shown in order to differentiate him from the episode's main character, Elton Pope. (DW: Love & Monsters.)
- Though not mentioned by him, he also sang the original recording of "Circle of Life" from The Lion King, the lyrics of which the Doctor quoted.