Peter Denyer: Dennis Dunstable in Please Sir! and Pantomime Writer

If you grew up watching British sitcoms from the late 1960s, you likely remember Dennis Dunstable, the lovable schoolboy played by Peter Denyer. But Denyer’s real passion lay in pantomime writing and directing, a second act that outlasted his screen fame.

Born: 19 August 1947, Dartford, Kent ·
Died: 18 September 2009, age 62 ·
Most famous role: Dennis Dunstable in Please Sir! ·
Other notable work: Played Dennis in Police, wrote pantomime scripts for over 30 years

Eight key facts about Peter Denyer, one pattern: his life was a tale of two careers – one in front of the camera, one behind the scenes of British theatre.

Who was Peter Denyer?

Early life and career beginnings

Peter John Denyer was born on 19 August 1947 in Dartford, Kent, according to The Independent. His first professional acting role came at age 19, playing a 3rd Workman in an uncredited stage production, as recorded by IMDb.

Breakthrough role as Dennis Dunstable

Denyer’s big break arrived in 1968 when he was cast as Dennis Dunstable in the ITV sitcom Please Sir! The character, a schoolboy with learning difficulties who often misunderstood situations, became an instant hit with audiences. The series ran from 1968 to 1972 and spawned a 1971 film. Wikipedia notes that the character was a source of humour through misunderstandings.

The implication: Dennis Dunstable may have been the role that made him famous, but it was also the one that nearly trapped him in a single character type.

What happened to Peter Denyer?

Date and circumstances of his death

Peter Denyer died on 18 September 2009 in Cheltenham, Gloucestershire, at the age of 62, as confirmed by IMDb. The Independent published an obituary that same year, identifying him as an actor, writer, producer and director.

Cause of death – what the sources say

Available sources do not consistently state a cause of death. The Independent obituary reports only that he died, without specifying the cause. Some online memorials and social media posts mention cancer, but no official medical confirmation has been published in a reputable source. This remains an area of uncertainty.

The trade-off: while we know when and where Denyer died, the lack of a consistent, sourced cause means that detail remains part of the “unclear” category.

What was Peter Denyer’s most famous role?

Dennis Dunstable in Please Sir!

Denyer’s most famous role was unquestionably Dennis Dunstable in Please Sir!, a character he played from 1968 to 1972. IMDb states that this role remains his best-known screen credit. The series also led to a film version in 1971, in which Denyer reprised the role.

Other TV appearances

After Please Sir! ended, Denyer appeared in the spin-off series The Fenn Street Gang, as noted by the British Comedy Guide. He also played a character named Dennis in the sitcom Police during the 1970s. His on-screen credits, however, were relatively few compared to the volume of his later theatre work.

Why this matters: Denyer’s acting career was short but memorable – he essentially left screen acting behind in the 1970s to focus entirely on pantomime, a move that few of his fans would have predicted.

Who played Dennis’ dad in Please Sir!?

Actor Peter Bayliss as Mr. Dunstable

In the 1971 film Please Sir!, Dennis’s father, Mr. Dunstable, was played by actor Peter Bayliss. This character appeared only in the film version, not in the original television series. Bayliss was a seasoned character actor with a long career in British film and television.

The catch: The on-screen father-son dynamic between Bayliss and Denyer was a one-off – the TV series never featured Dennis’s parents, so the film gave fans a rare glimpse into his home life.

Did Peter Denyer work outside acting?

Career as a pantomime writer and director

Yes – and this became his primary career. According to NODA, Denyer wrote for theatre for more than thirty-five years and directed hundreds of plays, musicals and pantomimes. He was Artistic Director of Kevin Wood Pantomimes from 1986 until 2006. The Independent adds that he teamed up with producer Kevin Wood in 1986 and continued writing, directing and producing pantomimes until his death.

Other creative work

Beyond pantomime, Denyer also directed plays and musicals. His scripts are still commercially distributed by David Spicer Productions, which describes him as having written for theatre for more than 30 years. This means his work continues to be performed by amateur and professional groups around the world.

The pattern: Denyer moved from a short-lived acting career to a long, productive tenure in live theatre, a transition that many former child actors fail to make.

What is Peter Denyer’s legacy?

Remembered by fans of Please Sir!

For fans of British sitcoms, Denyer is forever Dennis Dunstable. The character remains a cult favourite among those who remember the show’s original run or have discovered it through repeats. Social media posts occasionally surface, such as one from The Sixties Time Machine, that refer to him as a revered writer of pantomime scripts still used today.

Continued use of his pantomime work

Denyer’s pantomime scripts are still marketed by companies like David Spicer Productions, ensuring that his creative output reaches new audiences years after his death. The NODA sample script for Sleeping Beauty credits him as the author and notes his extensive directing experience.

Why this matters: Denyer’s legacy is split between a beloved TV character and a substantial body of theatre work – the latter is less visible but arguably more significant in terms of volume and impact.

Timeline

• 19 August 1947 – Born in Dartford, Kent (The Independent)
• 1966 – First professional role as ‘3rd Workman’ at age 19 (IMDb Biography)
• 1968–1972 – Played Dennis Dunstable in Please Sir! (ITV series) (Wikipedia)
• 1971 – Appeared in the film Please Sir! alongside Peter Bayliss (IMDb)
• 1970s – Played Dennis in the sitcom Police (British Comedy Guide)
• 1986 – Teamed with producer Kevin Wood to write/direct pantomimes (The Independent)
• 1986–2006 – Artistic Director of Kevin Wood Pantomimes (NODA)
• 18 September 2009 – Died in Cheltenham after a long illness (IMDb)

Confirmed facts vs what’s unclear

Quotes and perspectives

“Peter Denyer, actor who played the slow but lovable Dennis in Please Sir!”

— The Independent (UK newspaper), obituary headline

“His first professional acting role was as 3rd Workman at age 19.”

— IMDb (film database), biography

“He was a revered writer of pantomime scripts still used today.”

— The Sixties Time Machine (Facebook fan page)

“He wrote for theatre for more than 30 years and directed hundreds of plays, musicals and pantomimes.”

— David Spicer Productions (theatre publisher)

For British comedy fans, the story of Peter Denyer is a reminder that the person behind an iconic character can have a rich, unexpected second act. His pantomime scripts continue to entertain audiences, proving that his real talent was not just playing a slow-witted schoolboy, but crafting laughter on stage for decades. For theatre groups looking for proven material, the choice is clear: Denyer’s pantomimes remain a reliable, time-tested resource, or risk missing out on a legacy that still fills seats.

For those interested in Peter Denyers later career, a detailed account of his transition from sitcom star to pantomime writer is available.

Frequently asked questions

Related reading: John Alderton: Why He Retired, Marriage to Pauline Collins (co-star in Please Sir!) · James Buckley: Net Worth, Wife, Children, and What He Does Now (British comedy actor biography)