Atif Basra

Atif Basra (PROSE: "Taking Care") was the caretaker at Coal Hill School in the 2010s.

Six weeks into the 2013/2014 school year, he placed a tin bucket under a leak in the roof in the corridor outside Clara Oswald's classroom. (PROSE: Normality)

The following year, the Twelfth Doctor hypnotised him into believing he had the flu, as well as a flying car and three wives, in order to go undercover as the replacement caretaker to stop the Skovox Blitzer. (TV: The Caretaker)

Behind the scenes
A similar individual appears in The Edge of Time. The manager of a Shoreditch laundrette is a former caretaker of Coal Hill School who left in Autumn 2014. This implies that he is the same Coal Hill caretaker replaced by the Twelfth Doctor in The Caretaker.