David Arch is a British

British people

The British are citizens of the United Kingdom, of the Isle of Man, any of the Channel Islands, or of any of the British overseas territories, and their descendants...

 musician

Musician

A musician is an artist who plays a musical instrument. It may or may not be the person's profession. Musicians can be classified by their roles in performing music and writing music.Also....* A person who makes music a profession....

, composer

Composer

A composer is a person who creates music, either by musical notation or oral tradition, for interpretation and performance, or through direct manipulation of sonic material through electronic media...

, arranger

Arranger

In investment banking, an arranger is a provider of funds in the syndication of a debt. They are entitled to syndicate the loan or bond issue, and may be referred to as the "lead underwriter". This is because this entity bears the risk of being able to sell the underlying securities/debt or the...

 and musical director.

Career

Arch is the current arranger and musical director of the Strictly Come Dancing

Strictly Come Dancing

Strictly Come Dancing is a British television show, featuring celebrities with professional dance partners competing in Ballroom and Latin dances. The title of the show suggests a continuation of the long-running series Come Dancing, with an allusion to the film Strictly Ballroom...

house band, as well as the band's pianist and guitarist. Prior to this, Arch had worked on Just the Two of Us.
Arch in 2005 played keyboards for the Greg Lake Band.
Arch toured with Paul McCartney

Paul McCartney

Sir James Paul McCartney, MBE, Hon RAM, FRCM is an English musician, singer-songwriter and composer. Formerly of The Beatles and Wings , McCartney is listed in Guinness World Records as the "most successful musician and composer in popular music history", with 60 gold discs and sales of 100...

 in support of his Memory Almost Full

Memory Almost Full

Memory Almost Full is the 14th studio album by Paul McCartney, released in the United Kingdom on 4 June 2007 and in the United States a day later. The album was the first release on Starbucks' Hear Music label...

album, and has contributed to the soundtrack

Soundtrack

A soundtrack can be recorded music accompanying and synchronized to the images of a motion picture, book, television program or video game; a commercially released soundtrack album of music as featured in the soundtrack of a film or TV show; or the physical area of a film that contains the...

s of The Queen

The Queen (film)

The Queen is a 2006 British drama film directed by Stephen Frears, written by Peter Morgan, and starring Helen Mirren as the title role, HM Queen Elizabeth II...

, the film Harry Potter series, Bridget Jones's Diary

Bridget Jones's Diary (film)

Bridget Jones's Diary is a 2001 British romantic comedy film based on Helen Fielding's novel of the same name. The adaptation stars Renée Zellweger as Bridget, Hugh Grant as the caddish Daniel Cleaver, and Colin Firth as Bridget's "true love", Mark Darcy...

, Agatha Christie's Poirot

Agatha Christie's Poirot

Agatha Christie's Poirot is a British television drama that has aired on ITV since 1989. It stars David Suchet as Agatha Christie's fictional detective Hercule Poirot. It was originally made by LWT and is now made by ITV Studios...

 and Foyle's War

Foyle's War

Foyle's War is a British detective drama television series set during World War II, created by screenwriter and author Anthony Horowitz, and was commissioned by ITV after the long-running series Inspector Morse came to an end in 2000. It has aired on ITV since 2002...

.