His first book of photography was published in 1982.
The photographs documented the British subculture of East End skinheads, and were almost all taken in 1980 and 1981. The book, entitled "Skinhead," is widely considered one of the authorative visual texts on the youth movement, and includes several essays on different aspects of skinhead subculture, including some penned by Knight himself. The book was released while Knight was still a student in art school.
It's pretty nifty that both Knight's first recognized work and his latest endeavor have to do with skinheads. It's a subect that has fascinated Knight since he first observed the brutal subculture in the East End. Coincidence? Definitely not.