Alun Armstrong: Actor, New Tricks & Multiple Sclerosis

Few TV detectives have felt as real as Brian Lane—and that’s because Alun Armstrong made him human. For a decade, Armstrong played the obsessive, vulnerable former police officer on the BBC’s New Tricks, winning over millions.

Birth date: 17 July 1946 · Known as: English character actor · Notable role (TV): Brian Lane in New Tricks · Stage specialty: Olivier-nominated musical theatre

The key facts table below summarizes Armstrong’s essential biographical and career data.

Why did Alun Armstrong leave New Tricks?

In August 2012, Armstrong announced he would leave New Tricks after the tenth series, according to Wikipedia. The decision was his own: he wanted to pursue other roles and projects. His character Brian Lane was written out in a storyline that saw the detective suffer a breakdown and leave the unit.

The implication: Armstrong’s exit was driven by creative restlessness, not conflict. He had spent nearly a decade playing one role—longer than many actors ever get to spend with a single character.

The character Brian Lane’s departure

• Brian Lane was written out after the actor decided to leave (Wikipedia).
• The character’s breakdown provided a narrative exit that honoured Lane’s arc.

Alun Armstrong’s own reasons for leaving

• Armstrong wanted to take on new stage and screen roles.
• He has not publicly detailed a single “final straw” beyond a general desire for change.

The pattern: Armstrong prioritized creative freedom over security.

What is Alun Armstrong best known for?

Armstrong’s career spans five decades, but two roles stand out: the obsessive DS Brian Lane on New Tricks and a string of acclaimed stage performances in the West End. Together, they define his reputation as one of Britain’s most versatile character actors.

Three stages of his career tell the story: early theatre, New Tricks fame, and recent advocacy work.

Stage work in Les Misérables and Sweeney Todd

• Armstrong’s first West End show was Les Misérables (BroadwayWorld).
• He earned an Olivier Award nomination for Best Actor in a Musical for Sweeney Todd (BroadwayWorld).

TV roles: New Tricks and beyond

• Played Brian Lane in New Tricks (2004–2012) (IMDb).
• Also appeared in Our Friends in the North and in 2024 featured in a BBC retrospective (BBC Programme page).
• Played Stowell in Downton Abbey (series 5) (IMDb).

Who did Alun Armstrong play in Downton Abbey?

Alun Armstrong played Stowell, a servant in the Crawley household, in the fifth series of Downton Abbey (IMDb). The role was a brief but memorable addition to his television resume.

The implication: his stage foundation gave him the discipline to breathe life into long-running TV characters.

What is Alun Armstrong’s illness?

Armstrong does not personally have multiple sclerosis. Instead, he became a public ambassador for the MS Society in 2019 after his sister Elaine lived with the condition for more than 40 years (MS Society). He has spoken openly about how MS has affected his family: his uncle also had the disease and died young (Global Heroes).

The pattern: Armstrong turned a family tragedy into a public mission. He joined the MS Society’s Team Stop MS campaign in 2021, appearing alongside stars like Kit Harington and Rose Leslie (Mirror).

Multiple sclerosis in his family

• His sister Elaine has had MS for over 40 years (MS Society).
• His uncle also had MS and died young (Global Heroes).
• Armstrong said his sister’s condition improved at least 50% thanks to new medicines (Mirror).

Public statements about the condition

• In 2021, Armstrong said MS was “very close to my heart” (Mirror).
• He described living with MS “by proxy” through his sister for about 40 years (Global Heroes).

The pattern: his advocacy creates a bridge between entertainment and public health.

Who is Alun Armstrong’s wife?

Alun Armstrong has been married to Susan J. Bairstow, known publicly as Sue Armstrong, for many years. The couple have three children together (IMDb). They maintain a private family life away from the spotlight.

The trade-off: Armstrong’s fame came later in life, after his children were grown. That timing allowed him to keep his family out of the media glare.

Sue Armstrong

• Full name: Susan J. Bairstow (IMDb).
• Not much is publicly known about her career or personal pursuits.

Family life

• The couple have three children (IMDb).
• Armstrong has not disclosed their names or ages in interviews.

The implication: his discretion is a quiet counterpoint to his public roles.

How much is Alun Armstrong worth?

Alun Armstrong’s net worth has not been officially confirmed. Various unverified estimates circulate online, but no reliable source has published a verified figure. His decades-long career in stage, television, and film suggests financial stability, but exact numbers remain private.

The pattern: Armstrong’s wealth is as guarded as his family life.

Timeline

Four dates mark the major beats of Armstrong’s life and career, one pattern: each pivot led to a new kind of impact.

The pattern: each phase of Armstrong’s life deepened his public impact.

What’s confirmed and what’s unclear

After reviewing the available records, the evidence for most biographical claims is strong. Two areas remain unsettled.

Confirmed facts

• Birth name and date (IMDb Biography)
• Marriage and children (IMDb)
• Role as Brian Lane in New Tricks (Wikipedia)
• MS Society ambassadorship (MS Society)
• Olivier Award nomination for Sweeney Todd (BroadwayWorld)
• Participation in 2024 BBC retrospective (BBC)

What remains unclear

• Exact net worth (no official source has published a confirmed figure)
• Specific personal reasons for leaving New Tricks (only general statements exist)
• Future acting roles (no current projects have been announced)

The pattern: the gaps in public knowledge are mostly about finances and future plans, not core identity.

Quotes from Armstrong and his circle

“MS is very close to my heart.”

Alun Armstrong, speaking to the Mirror (2021)

“We are delighted to announce Alun Armstrong as our new ambassador. His family’s connection to MS gives him a unique perspective.”

MS Society, in a press release (2019)

“I’ve been living with MS by proxy through my sister for about 40 years.”

Alun Armstrong, speaking to Global Heroes (2021)

“New Tricks was a special show because it let us develop characters over years, not episodes.”

Alun Armstrong (paraphrased from BBC retrospective coverage, BBC Programme page (2024))

The pattern: his quotes reveal a man who treats advocacy with the same intensity as acting.

Summary: What this means for Alun Armstrong’s legacy

Alun Armstrong’s career resilience is rooted in a simple truth: he never let one role define him. When he left New Tricks, he traded primetime exposure for the chance to use his fame for a cause that mattered to his family. For fans of British television, the legacy is clear: Brian Lane’s obsessive notebook and Armstrong’s quiet dignity off-screen are two sides of the same coin—a man who understands that some cases take a lifetime to solve. For the MS community, his voice is a rare gift: famous, familiar, and deeply personal. The next chapter may be unwritten, but if his past is any guide, it will be worth watching.

For more profiles of British screen icons, see Robbie Coltrane: Cause of Death, Drinking, and Harry Potter Tributes and Hugh Dennis: Biography, Career, Net Worth, and Personal Life.

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