Simon Cowell

The Wire once took on the voice of Simon Cowell whilst attacking the Tenth Doctor through Max Wu's blue tooth speaker. Alice Wu recognised the voice due to its arrogant tone, with the Doctor citing the choice of mimicry to be fitting "if you're aiming for the essence of nastiness". (PROSE: Loose Wire)

Behind the scenes
Simon Cowell played himself in Looking for Pudsey.

References in invalid sources
Cowell was a judge on the X Factor. (NOTVALID: Looking for Pudsey) He was once given a wedgie by a Krafayis. (NOTVALID: AAAGH!) In 2016, Eddie Redmayne accidentally called him looking for Pudsey, but Simon, said "it's a no from me" and hung up. (NOTVALID: Looking for Pudsey)

ITV's animated comedy sketch series featured a science fiction parody of  entitled Galaxy Idol, which saw the Fourth Doctor serve as a panelist alongside Cowell, with the TARDIS being parked at the Galaxy Idol space station. Though remaining silent as Cowell judges R2-D2, an admittedly biased Doctor says that he hated a performance by a grey Dalek before Simon Cowell gaves "four words", "ex-ter-min-ate", causing the Dalek to burst into tears whilst being consoled by Ant McPartlin.