HotShot is a reality competition show, seen in the episode Fifteen Million Merits. It's similar to The X-Factor, in that contestants compete with their talents and then are judged; based on the judges' decisions, the contestants may then be offered new roles in different media.
In Crocodile, the receptionist at the hotel mentions he's not allowed to reveal who stayed in one of their rooms, due to an incident involving one of the judges from HotShot.
In White Christmas, a HotShot ad appears on Joe's TV.
A news clipping in Bandersnatch states that Hot Shots is set to make a new series starting in 1985.
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