Unity, formerly the Ceramic and Allied Trades Union (CATU), is a British trade union, created in the early 19th century to protect pottery workers from dangerous conditions of their field. In 2006 it changed its name to Unity.
The union was founded in 1827 as the National Union of Operative Potters, affiliated to the National Association for the Protection of Labour. Based in the Potteries, it was the first union to actively recruit members from outside the area, and focused its efforts on building its strength, and opposing the worst truck shops. While the union collapsed in 1837, a loose federation named the United Branches of Operative Potters, which had been founded by some of its members three years before, ensured trade unionism survived in the industry.