Trade unions have a long history of providing learning for their members. After years of decline this flourished after the 1997-2010 Labour government introduced the Union Learning Fund and legal rights for union learning representatives. This article reviews that extraordinary renaissance and discusses how a new Labour government could learn the lessons of the first ULF and introduce a new, and stronger, version helping millions of working people, including the most disadvantaged, encouraging employers to invest more in training, promoting economic growth, and rebuilding a key element of adult learning.