NWOBM was a movement of heavy metal bands that appeared in the early 1980s.
It was influenced by American New Wave of Heavy Metal bands and British punk rock.
All these bands were against the conservatism and musical style of traditional heavy metal music in Britain.
NWOBM is a term coined to refer to a movement that occurred in the early 1980s, which featured new wave of British heavy metal (NWOBHM) bands influenced by American New Wave of Heavy Metal (NWOHM) acts. The NWOBHM scene emerged from England’s punk rock and new wave music cultures, as well as from hard rock and heavy metal scenes. It was primarily distinguished from other types of metal by its use of traditional songs in contrast to more progressive, complex compositions.