Sometimes casting can be a completely creative process and sometimes contracts can get in the way.
If its a hit they were worried there would be a conflict.
Thats what often happens with actors contracts, you could just do small pieces.
James Norton and Nikolaj Coster-WaldauMichael Shelford, Getty Images
So my arm was forced.
Initially, Norton had preferred William due to his wily and cerebral nature, he said.
The pair are joined by the likes of Emily Beecham, Clemence Poesy, Eddie Marsan and Juliet Stevenson.
That was less documented but is the most important piece, he added.
It contextualizes their stories they werent just meaningless grabs for power they were husbands and fathers.
A lot of the show is rooted in that intimate, private space.
Attendees at Content London were also treated to an exclusive trail of the series.
Kaletsky said the key to the shows success could be the interweaving of the two narratives.