
Douglas Reith
Acting • Born 1953-07-16
Biography
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).
Filmography
33 credits
International Velvet
Movie • 1978
Howard

The War Below
Movie • 2021
Field Marshal Haig

W.E.
Movie • 2011
Lord Brownlow

Downton Abbey: A New Era
Movie • 2022
Lord Merton

Bloodlines: Legacy of a Lord
Movie • 1998

The Queen
Movie • 2006
Lord Airlie

Downton Abbey: The Grand Finale
Movie • 2025
Lord Merton

Enid
Movie • 2009
BBC Interviewer

An Englishman Abroad
Movie • 1983
Toby

Rush
Movie • 2013
Awards Presenter

The Queen's Sister
Movie • 2005
Horace Featherstonehaugh

Serial Teachers 2
Movie • 2015
Le chef de la sécurité

Dumbo
Movie • 2019
Sotheby

Downton Abbey
Movie • 2019
Lord Merton

SAS: Red Notice
Movie • 2021
Sir Charles Whiteside

The Happy Autumn Fields
Movie • 1980
Fitzgeorge

Amy
Movie • 1984
Jimmy Martin

Professor T
TV • 2021
Dean

Minder
TV • 1979
Bellars

Rose and Maloney
TV • 2002

Downton Abbey
TV • 2010
Lord Merton

Fearless
TV • 2017
Justice Angus Hill

Outlander
TV • 2014
Professor Brown

Elizabeth I
TV • 2005
Judge

Elizabeth I
TV • 2005
Jude

The Prince and the Pauper
TV • 1996
Chamberlain

Pandora
TV • 2019
Prescott Fleming

Agatha Raisin
TV • 2016
Lord Pendlebury

The Crown
TV • 2016
Admiral Leach

Ancient Rome: The Rise and Fall of an Empire
TV • 2006
Metellus

Playhouse
TV • 1974
Fitzgeorge

Cold Warrior
TV • 1984
Ferris

Rumpole of the Bailey
TV • 1975
Sergeant Downs