Columbia subject headings:
Mass media--Great Britain--History--20th century.
Mass media--Influence.
Mass media--Social aspects--Great Britain--History--20th century.
Harvard subject headings:
Mass media--Great Britain--History--20th century.
Mass media--Influence
Mass media--Social aspects--Great Britain--History--20th century.
Princeton subject headings:
Mass media--Great Britain--History--20th century.
Mass media--Influence.
Mass media--Social aspects--Great Britain--History--20th century.