Spotty Perkins

A character with black hair dressed in a yellow shirt was depicted on the cover of The Beano Summer Special 1981 at Dolphinarium, next to two other characters. (TV: The Rings of Akhaten, The Universe is Calling)

Behind the scenes
Although unnamed in the Doctor Who universe, the character is called Algernon "Spotty" Perkins in The Beano comic books, which crossed over with the Doctor Who universe in the first issue of BeanoMAX.