After the BNP, the NF has been the most successful far-right group in British politics since the Second World War. During its history, it has established sub-groups such as a trade unionist association, a youth group, and the Rock Against Communism (RAC) musical organisation. Only whites are permitted membership of the party and in its heyday most of its support came from White British working and lower middle-class communities in Northern England and East London. The NF has generated vocal opposition from left-wing and anti-fascist groups throughout its history, and NF members are prohibited by law from membership in various professions.