Somewhat astonished by those who do not really understand the pared back, almost caricature approach of this.
What is most remarkable about this particular dramatisation is that it is based entirely on court transcripts. All the words (and text messages) portrayed on screen were spoken (or read out) in court. Despite the using actors, this drama is entirely based in fact, and not just any old fact, but testimonies sworn under oath in court.
Jamie Vardy's silence was not bizarre. He was mute in this because he did not speak on record in court at any point during the trial. The few scenes that took place outside of the court room where of Coleen and Rebekah, either reading through their witness statements or exchanging a flurry of text messages. There are no scenes of Coleen and Wayne at home because they would be supposition, and sometimes, fact is more interesting, or in this instance, banal and ridiculous.
The dramatisation is intended to be completely deadpan and devoid of emotion to make the trial and Rebekah's testimony all the more absurd. For once, there is just no need to make a silk purse out of this sow's ear.
As for Michael Sheen taking part, well, the trial was one of the most talked about events in the UK this year. Sheen would have been offered good money for it, and he loves to make topical dramas like this. He was clearly having a lot of fun, and rightly so.