Alex Ferns is a Scottish actor who is perhaps best known for playing abusive husband Trevor in BBC soap EastEnders. His film credits include Joyeux Noël, The Legend of Tarzan and the lead role in 2004's Man Dancin'. In 2019, Ferns starred as mining crew leader Andrei Glukhov in HBO/Sky miniseries Chernobyl.

Alex Ferns plays as DS Nick Holness in The Devil's Hour.
Alex Ferns is the top #1 member of the cast and appears in 6 episodes.

Jessica Raine (born 20 May, 1982) is a British stage, film and television actress, best known for playing midwife Jenny Lee in the BBC drama Call the Midwife.

Jessica Raine plays as Lucy Chambers in The Devil's Hour.
Jessica Raine is the top #2 member of the cast and appears in 6 episodes.

Philip James Dunster (born 1992) is an English actor, known for his role as Lance Corporal Will Jensen on the Sky One drama series Strike Back (2017-2018), Tristan on the Channel 4 science fiction series Humans (2018), as Jamie Cole on the ITV comedy-drama series The Trouble with Maggie Cole (2020), and as Jamie Tartt on Apple TV+'s Ted Lasso starring Jason Sudeikis.

Phil Dunster plays as Mike Stephens in The Devil's Hour.
Phil Dunster is the top #3 member of the cast and appears in 6 episodes.

Nikesh Patel plays as DI Ravi Dhillon in The Devil's Hour.
Nikesh Patel is the top #4 member of the cast and appears in 6 episodes.

Benjamin Chivers plays as Isaac Stephens in The Devil's Hour.
Benjamin Chivers is the top #5 member of the cast and appears in 6 episodes.

Talia Walker Bassols plays as Meredith Warren in The Devil's Hour.
Talia Walker Bassols is the top #6 member of the cast and appears in 6 episodes.

Rhiannon Harper-Rafferty plays as Debbie Warren in The Devil's Hour.
Rhiannon Harper-Rafferty is the top #7 member of the cast and appears in 6 episodes.

Peter Dougan Capaldi (born April 14, 1958) is a Scottish actor, writer and director. He portrayed the twelfth incarnation of the Doctor in Doctor Who and Malcolm Tucker the spin doctor in The Thick of It, for which he has received four British Academy Television Award nominations, winning Best Male Comedy Performance in 2010. When he reprised the role in In the Loop, Capaldi was honoured with several film critic award nominations for Best Supporting Actor. In 2012, Capaldi wrote (with Tony Roche), directed and performed in The Cricklewood Greats, an affectionate spoof documentary about a fictitious film studio, which tracks real developments and trends throughout the history of British cinema. Film roles include Oldsen in Local Hero, Angus Flint in Ken Russell's The Lair of the White Worm, and Mr Curry in Paddington and its sequel, Paddington 2. As a director, Capaldi won the Academy Award for Best Live Action Short Film and the BAFTA Award for Best Short Film for his short film Franz Kafka's It's a Wonderful Life. He went on to write and direct the drama film Strictly Sinatra and helmed two series of sitcom Getting On. Description above from the Wikipedia article Peter Capaldi, licensed under CC-BY-SA, full list of contributors on Wikipedia.

Peter Capaldi plays as DCI Daniel Hegarty in The Devil's Hour.
Peter Capaldi is the top #8 member of the cast and appears in 3 episodes.