Columbia subject headings:
Labor unions--Great Britain--Political activity.
Labor unions--Great Britain.
Labor unions--Political activity--Great Britain.
Harvard subject headings:
Campaign funds--Law and legislation--Great Britain.
Labor unions--Great Britain--Finance.
Labor unions--Great Britain--Political activity.
Labor unions--Political activity--Law and legislation--Great Britain.
Labour Party (Great Britain)
Princeton subject headings:
Great Britain. Trade Union Act 1913.
Labor unions--Great Britain--Finance.
Labor unions--Great Britain--Political activity.
Labor unions--Law and legislation--Great Britain.