David Arch is a British musician, composer, arranger and musical director.
Arch is the current arranger and musical director of the Strictly Come Dancing house band, as well as the band's pianist and guitarist.[1] Prior to this, Arch had worked on Just the Two of Us.[2] Arch in 2005 played keyboards for the Greg Lake Band.[3] Arch toured with Paul McCartney in support of his Memory Almost Full album, and has contributed to the soundtracks of The Queen, the film Harry Potter series, Bridget Jones's Diary, Agatha Christie's Poirot and Foyle's War.