Just Jack (Jack Allsopp) was born North London in 1978, known by the stage name Just Jack, is an English stage musician.

Jack grew up on a diet of dance music including, breakdance, Electro hip hop and house. A wannabe break dancer at eight, his love of dance music led him to start DJing at the age of fifteen and he soon became submerged in DJ culture and US garage.

After completing a degree in Furniture Design, Jack enrolled on a community music production course, which heightened his awareness to the potential of sampling. This inspired Jack to concentrate on perfecting his sound by night and to take on a series of unfulfilling jobs by day.

Jack's debut album, titled The Outer Marker and released in 2002, was a collection of songs about modern life, relationships and the pressures of social situations.