Fortunato Cerlino plays as Pietro Savastano in Britannia.
Fortunato Cerlino is the top #1 member of the cast and appears in 48 episodes.

Kelly Reilly (born 18 July 1977) is an English actress. Reilly's performance in After Miss Julie at the Donmar Warehouse made her a star of the London stage and earned her a nomination for a Laurence Olivier Theatre Award for Best Actress of 2003. Aged 26, she's the youngest person ever nominated for that award. And, in 2005, she won Best Newcomer Award at the Cannes Film Festival for her role as Wendy in The Russian Dolls (Les Poupées Russes).

Kelly Reilly plays as Beth Dutton in Britannia.
Kelly Reilly is the top #2 member of the cast and appears in 29 episodes.

Nikolaj Lie Kaas (born 22 May 1973) is a prominent Danish actor whose career rose in the 1990s and who is still actively working today. He is the son of actor Preben Kaas and actor and writer Anne Mari Lie and father of two.

Nikolaj Lie Kaas plays as Divis in Britannia.
Nikolaj Lie Kaas is the top #3 member of the cast and appears in 19 episodes.

British actress from Merseyside, most known for portraying Matilda Wormwood in Matilda the Musical for which she won a Laurence Olivier Award for Best Actress, and Janet Hodgson in The Enfield Haunting, for which she received a British Academy Television Award nomination. She is the youngest recipient of an Olivier Award at the age of 10.

Eleanor Worthington-Cox plays as Cait in Britannia.
Eleanor Worthington-Cox is the top #4 member of the cast and appears in 19 episodes.

Julian Alistair Rhind-Tutt (born 20 July 1968) is an English actor. He is best known for his starring role as Dr "Mac" Macartney in the comedy television series Green Wing, the second series of which finished onChannel 4 in May 2006. He has also appeared in various other television shows and films.

Julian Rhind-Tutt plays as Phelan in Britannia.
Julian Rhind-Tutt is the top #5 member of the cast and appears in 19 episodes.

Ian McDiarmid is a Scottish actor and director best known for portraying Emperor Palpatine in the Star Wars film series. He has received an Olivier Award for Best Actor and a Tony Award for Best Featured Actor in a Play for his performances. Wikipedia

Ian McDiarmid plays as King Pellenor in Britannia.
Ian McDiarmid is the top #6 member of the cast and appears in 19 episodes.

Annabel Scholey is an English actress. She played Lauren Drake in the BBC supernatural drama Being Human and the leading role of 'Maddie' in the musical feature film Walking on Sunshine. Scholey played Contessina de Medici in the television series, Medici: Masters of Florence with Dustin Hoffman and Richard Madden.

Annabel Scholey plays as Nina in Britannia.
Annabel Scholey is the top #7 member of the cast and appears in 12 episodes.

Hugo Alexander Speer is an English actor and director.

Hugo Speer plays as Inspector Valentine in Britannia.
Hugo Speer is the top #8 member of the cast and appears in 10 episodes.

Barry Ward plays as Sawyer in Britannia.
Barry Ward is the top #9 member of the cast and appears in 9 episodes.

Paul Mackenzie Crook (born 29 September 1971) is a British actor and comedian. He shot to fame playing Gareth Keenan in the BBC sitcom The Office and went on to play Ragetti in the Pirates of the Caribbean films. More recently, he has written, directed and starred in the BBC4 sitcom detectorists and the BBC1 revival of childrens' favourite, Worzel Gummidge.

Mackenzie Crook plays as Veran in Britannia.
Mackenzie Crook is the top #10 member of the cast and appears in 9 episodes.