The present account of action learning describes its adoption for pragmatic reasons by the University of the Third Age (U3A). The reason for the existence of this movement is the education of retired people. The account seeks to explain why the action learning method spread from one local U3A to another and across it to other local U3As. The case is that the directness of action and its power to involve people brought action learning a following among persons so that they could carry out specific activities even though the persons concerned would never have heard of the term action learning. The successful use of the method fed through into the users' minds and brought about a mode of thought, one which unconsciously was capable of extension into an outlook that could be applied to a variety of situations. Thus two types of learning took place: that between U3As and that within U3As.