Columbia subject headings:
Communism--Great Britain--History--20th century.
Fascism--Great Britain--History--20th century.
Great Britain--Politics and government--20th century.
Harvard subject headings:
Communism--Great Britain--History--20th century
Fascism--Great Britain--History--20th century.
Great Britain--Politics and government--20th century.
Radicalism--Great Britain--History--20th century.
Princeton subject headings:
Communism--Great Britain--History--20th century.
Fascism--Great Britain--History--20th century.
Great Britain--Politics and government--20th century.