The writing, pace, and lack of subtlety received criticism from some reviewers; however, the format, dramatic scenes, and Buckens' acting were praised.

It explores the worlds of cocky officer Justin Mitchell, anxious defence solicitor Sam Malik and Leila Hassoun-Kenny, a rigorous lawyer leading the case against the accused.

[21][22] Rebecca Fielding of The Guardian felt that Showtrial's first series had a lot going on that made it hard for the reviewer to keep up with the premise of the show.

Although they also criticised Richard's writing, Radio Times enjoyed the scenes between Buckens and Ifeachor, describing them as "campy fun".

[25] The Evening Standard described Showtrial as a "fresh, considered spin on the usual crime procedural tropes" and commended Buckens' acting abilities for making Talitha "compellingly awful".

[27] The Guardian's Rebecca Nicholson said that the second series was "full of holes, lacks nuance and feels flabby", but observed that "the performances are strong – often stronger than the script," concluding that it was "a compelling watch.