Under Jackson's leadership, the union grew rapidly. By 1892, it had 2,723 members and had spread as far as Nottingham and Sheffield. That year, it was renamed as the Tramway, Hackney Carriage Employees and Horsemen's Association. Several small unions merged in: the Belfast Carters' Union, Bolton Tramway Union, Edinburgh and District Tramway and Carmen's Union, Huddersfield Carters' Union, and the Manchester, Salford and District Lurrymen and Carters' Union. Membership continued to grow, reaching 10,000 in 1901, when it became the "Amalgamated Association of Tramway and Vehicle Workers".
