Claim: The royal assent, wherein the monarch formally approves an act of the legislature, for Trade Disputes Act 1906, also called  An Act to provide for the regulation of Trades Unions and Trade Disputes,  was on the 21st of December 1906.
Evidence: 7 c. 47) was an Act of the Parliament of the United Kingdom passed under the Liberal government of Sir Henry Campbell-Bannerman. 21 December 1906 Royal assent is the method by which a monarch formally approves an act of the legislature (either directly, or through an official acting on the monarch's behalf). An Act to provide for the regulation of Trades Unions and Trade Disputes.