c. 14) was an act of the Parliament of the United Kingdom that amended and consolidated enactments relating to British nationality.

This was a radical break from the common law doctrine that citizenship could not be removed, renounced, or revoked.

The Naturalization Bill had its first reading in the House of Lords on 25 February 1870, presented by the Lord Chancellor, William Wood, 1st Baron Hatherley.

[2] The amended bill was considered and agreed to by the House of Lords on 9 May 1870.

[3] Section 18 of the act also included safeguards to preserve any rights, things done, liabilities, penalties, forfeits or investigations before the passing of the act.