Suggestions by @mkoerber

Blair Redford

as Casteel hawkethrone da’neer in From blood and ash

Score: -10

David Harewood

as Lord Rosemorran in A Curious Beginning

Score: +1

Cary Elwes

as Baron von Stauffenbach in A Curious Beginning

Score: 0

Marsha Thomason

as Lady Cordelia Beauclerk in A Curious Beginning

Score: +1

Colin Firth

as Sir Hugo Montgomerie in A Curious Beginning

Score: +1

Jason Momoa

as Colosso in A Curious Beginning

Score: +1

James Norton

as Inspector Mornaday in A Curious Beginning

Score: +4

Paul Bettany

as Edmund De Clare in A Curious Beginning

Score: +1

Anya Chalotra

as Salome in A Curious Beginning

Score: +1

Emilia Clarke

as Veronica Speedwell in A Curious Beginning

Score: +2

Felicity Jones

as Veronica Speedwell in A Curious Beginning

Score: +1

Richard Madden

as Revelstoke Templeton-Vane in A Curious Beginning

Score: +1

Stuart Martin

as Revelstoke Templeton-Vane in A Curious Beginning

Score: +1

Matt Bomer

as Revelstoke Templeton-Vane in A Curious Beginning

Score: +1

Justin Theroux

as Revelstoke Templeton-Vane in A Curious Beginning

Score: +1

Rahul Kohli

as Leon Twome in The FlatShare

Score: -5

Stuart Martin

as Brendan Taggard in It Happened One Summer

Score: -22