![Stephen Lyons](https://static.hbo.com/content/dam/hbodata/series/years-and-years/character/yearsandyears-stephen-1920.jpg?w=1200)
Stephen Lyons
Played by Rory Kinnear
Stephen is Muriel’s eldest son. As a successful financial adviser, he lives with his wife Celeste and their two daughters in a wealthy London neighborhood, seemingly shielded from the rapidly changing world around him.