As recently as 2018, Boyle was asked in a Reddit AMA about a potential third 28 Days Later film.
Actor Cillian Murphy has admitted that he would welcome a return for a potential second sequel to what many consider to be his breakout role, 28 Days Later.
28 Days Later served as something as a much needed kick in the undead for the zombie subgenre of horror movies.
With 28 Weeks Later ending on an ominous cliff hanger, along with Cillian Murphy’s Jim surviving 28 Days Later, there certainly seems to be scope enough to tell a satisfying story to cap a trilogy.