Vogue has this to say about the acting on Succession:

Actually, Succession’s Casting in General

It’s true that the Roy siblings don’t look like siblings—but they’re a brilliant, thoroughly unexpected ensemble nonetheless. It’s hard to pick a favorite. Is it Kieran Culkin, hilarious as the dissolute, revoltingly selfish youngest Roy scion, Roman? Or Sarah Snook as Siobhan, deceptively chill in her Waspy Fair Isle sweaters, but just as greedy as the rest of them (her nickname, “Shiv,” is perfect)? Or—my personal favorite—Matthew Macfadyen as Shiv‘s arriviste, excruciatingly gauche boyfriend, Tom. And I haven’t even mentioned Alan Ruck or Nicholas Braun or Hiam Abbass—this is a show packed with talent, and not an A-lister among them.

The Knockturnal has posted cast interviews from the premiere.  You can read the full interviews HERE.

Matthew Macfadyen – “Tom”

Can you describe your character in three words?

Matthew Macfadyen: A f*cking idiot. That’s not very good is it?

Can you talk about your character’s relationship to the Roy family?

Matthew Macfadyen: So I’m the fiancé of the daughter of the patriarch, whose played by Brian Cox. I work for the company. I’m head of parks, so I work for the parks division. I’m in love with her, but I’m also keen to be in the family firm and get embedded as much as possible.

What drew you to this project?

Matthew Macfadyen: I just thought the writing was a hoot. I thought it was really fun. Great cast and I hadn’t played an American before so that was a big draw and shooting in Manhattan