Michael Elphick was an English actor. He was known primarily in the UK for his trademark croaky voice and his work on British television, in particular his roles as private investigator Boon in the hit ITV series and subsequent role in BBC's EastEnders.

Elphick struggled with a highly publicised addiction to alcohol and at the height of his problem he admitted to consuming two litres of spirits a day.

The alcoholism contributed towards his death from a heart attack in 2002, when still only 55 years old.

Upon graduating from drama school Elphick was offered roles primarily as menacing heavies. He made his debut in Fraulein Doktor (an Italian-made First World War film starring Suzy Kendall as a double agent; 1968). He went on to play the Captain in Tony Richardson's version of Hamlet (1969); landed parts in cult movies such as The First Great Train Robbery and The Elephant Man and appeared in Lindsay Anderson's allegorical O Lucky Man! (1973).

In 1984 he played the role of Pasha in the film Gorky Park, for which he received a BAFTA nomination for best supporting actor in 1985. He was also seen as Phil Daniels' father in the cult film Quadrophenia (1979) and as the poacher, Jake, in Withnail & I (1987). In 1984 he played the lead, Fisher, a British Detective recalling under hypnosis a dystopian, crumbling Europe and his hunt for a serial killer in Lars von Trier's Palme D'Or nominated debut film, The Element of Crime.

On stage, Elphick played Marcellus and the Player King in Tony Richardson's stage version of Hamlet at the Roundhouse and on Broadway and he later played Claudius to Jonathan Pryce's Hamlet at the Royal Court Theatre, directed by Richard Eyre. He was also seen in The Changing Room, directed by Lindsay Anderson, at the Royal Court Theatre.

However it was his roles on television that Elphick became best known for. He briefly appeared in Coronation Street (1974) as Douglas Wormold, son of the landlord Edward, who for many years owned most of the properties in the road. Douglas unsuccessfully tried to buy The Kabin newsagent's from Len Fairclough.

He played villains in episodes of The Sweeney (1978), The Professionals (1978) and Hazell (1979), and appeared in the Dennis Potter play Blue Remembered Hills (1979). Elphick took the title role in Jack Pulman's drama Private Schulz (1981). Here he played Gerhard Schulz, a German soldier conscripted into SS Counter Espionage during the Second World War to destroy the British economy by flooding it with forged money.

He appeared as the Irish labourer Magowan during the first series of Auf Wiedersehen Pet (1983) and starred as Sidney Mundy in the ITV sitcom Pull the Other One (1984), before playing Sam Tyler in four series of Three Up, Two Down (1985-89). In 1986 Elphick landed his biggest television success, Boon (1986-92, 1995). He played Ken Boon, a retired fireman who opened a motorbike despatch business and later became a private investigator. Boon was very successful and ran for seven series. There was also a one-off episode screened in 1995, two years after it had been made. During breaks from Boon Elphick continued to act in film with cameo roles in The Krays (1990) and Let Him Have It (1991).

In 1993 Elphick took the role of a former Fleet Street journalist running a Darlington news agency in Harry (1993, 1995). He played the alcoholic and ruthless Harry Salter, who frequently used exploitation and underhand tactics to get a story. Elphick went on to play Billy Bones in Ken Russell's televised version of Treasure Island (1995) and Barkis in David Copperfield (1999).

In 2001 he joined the cast of EastEnders, where he played Harry Slater, a romantic interest for Peggy Mitchell (Barbara Windsor). The plotline indicated that Slater had sexually abused his niece, Kat Slater (Jessie Wallace), at the age of 13 and her "sister" Zoe (Michelle Ryan) was the daughter born to her when she became pregnant by him. Elphick's character promptly left the series, and news of his death in Spain reached Walford four months later.