Philip O'Sullivan is known for Tristan + Isolde (2006), Albert Nobbs (2011) and The Professor and the Madman (2019).

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"The Gentlemen" and "Slow Horses" return this fall, while the "Reacher" spin-off series "Neagley" makes its debut. See our guide of the biggest Fall TV and streaming releases.

2026 Fall TV and Streaming Watch Guide

&quot;The Gentlemen&quot; and &quot;Slow Horses&quot; return this fall, while the &quot;Reacher&quot; spin-off series &quot;Neagley&quot; makes its debut. See our guide of the biggest Fall TV and streaming releases.

Get a closer look at these actors from their many TV and streaming series roles.

Streaming Stars, Then and Now

Jim Broadbent, Julian Firth, Frank Hvam, and Philip O'Sullivan in Game of Thrones (2011)

Philip O'Sullivan and Linus Roache in Vikings (2013)

James Franco and Sophia Myles in Tristan + Isolde (2006)

Glenn Close, Aaron Taylor-Johnson, and Mia Wasikowska in Albert Nobbs (2011)

Mel Gibson and Sean Penn in The Professor and the Madman (2019)

Philip O'Sullivan(I)

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