

Douglas Reith
Douglas Reith is a British actor and teacher. He is best known for his role as Lord Merton in the television series Downton Abbey (2010–2015), as well as its two follow-up films. Reith was born in Melton, Suffolk. He studied acting at the Webber Douglas Academy of Dramatic Art. He began acting in the late 1970s, beginning with an appearance in International Velvet (1978) alongside Tatum O'Neal and Christopher Plummer. He worked as an announcer and presenter at BBC Radio 3 for five years before leaving to study Greats at Christ Church, Oxford for four years beginning in 1989. He worked as a teacher, including at Westminster School, before resuming his acting career. Reith joined the cast of Downton Abbey as Lord Merton in 2012, and alongside the cast was nominated for the Screen Actors Guild Award for Outstanding Performance by an Ensemble in a Drama Series at the 23rd Screen Actors Guild Awards. He reprised the role in the films Downton Abbey (2019) and Downton Abbey: A New Era (2022). In 2017, Reith was cast in Tim Burton's live-action remake Dumbo (2019). In 2019, he was cast in SAS: Red Notice (2021).
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Outlander
2014

The Crown
2016

Downton Abbey
2010

Minder
1979

Professor T
2021

Rumpole of the Bailey
1975

Playhouse
1974

Rush
2013

Agatha Raisin
2016

Dumbo
2019

Downton Abbey
2019

Downton Abbey: A New Era
2022

Pandora
2019

Rentaghost
1976

Downton Abbey: The Grand Finale
2025

Rose and Maloney
2002

SAS: Red Notice
2021

Ancient Rome: The Rise and Fall of an Empire
2006

Fearless
2017

The Queen
2006

Elizabeth I
2005

W.E.
2011

The War Below
2021

International Velvet
1978

The Prince and the Pauper
1996

Serial Teachers 2
2015

An Englishman Abroad
1983

Enid
2009

The Happy Autumn Fields
1980

The Queen's Sister
2005