The 27-year-old actor is starring in a remake of Alan Bennett's critically-acclaimed Talking Heads monologues.
The series is comprised of 12 episodes, 10 of which are based on original pieces and two of which are new monologues written by Bennett last year.
Comer will star in 'Her Big Chance', which was originally aired back in 1988 with Julie Walters playing Lesley, an actor who thinks she's landed her big break in a film that transpires to be a soft porno.
The series will also feature the likes of Martin Freeman, Sarah Lancashire and Tamsin Greig.
The first series of Talking Heads was aired by the BBC in 1988 and the second series followed in 1998.
If the monologues seem familiar to you, but you're too young to have watched them when they first aired, the chances are you studied them in GCSE or A Level English.
Commenting on the monologues remade amid the coronavirus pandemic, 86-year-old Bennett said: "In such difficult circumstances, that the BBC should choose to remount both series of Talking Heads, and produce two entirely new ones, is a comfort and a huge compliment.
"I hope a new generation of actors will get and give as much pleasure as we did 20 and 30 years ago."
#TalkingHeads will air on @BBCOne from 9pm on Tuesday 23 June with a double-bill. All 12 films will be available to stream on @BBCiPlayer from the same date. To celebrate, here's a first look: https://t.co/1uoG0zQVop pic.twitter.com/M86c7OZZxP
- BBC Press Office (@bbcpress) June 9, 2020
Nicholas Hytner, Bennett's long-term collaborator and director and producer of the new series, said everyone involved had to work in an 'unprecedented way' to make the show while observing social distancing rules.
He said: "Alan Bennett's Talking Heads are among the masterworks of one of the very greatest writers in TV, film and theatre history.
"It has been a profound and fascinating experience to work out a way of making them again, this time with a company of phenomenal actors who are the equal of those who first made them; with a group of leading theatre directors, colleagues and friends of long standing; and with a team behind the camera that represents the best of the British TV and film industries.
"It is a wonderful bonus that two of the 2020 Talking Heads are totally new, written only a short time before the current crisis began. Everyone involved has been working in an unprecedented way, rigorously observing social distancing, entirely rethinking ways of filmmaking that until a few weeks ago seemed routine.
"The shoot will never bring any of us within touching distance of each other, but I hope that in every other way it will reach out and touch millions of viewers."
The series will begin with a double bill at 9pm on Tuesday 23 June on BBC One and all 12 episodes will be made available on iPlayer on the same day.
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