This study investigated the seamless mobile learning practices of UK government workers at various life stages, to understand how context impacted decisions about how, when and where learning was undertaken. Following Hedegaard, the context was understood as involving settings embedded within institutions. Drawing on analysis of data from public domain blogs and reports and anonymised trace data showing e-learning visits via a mobile device, a picture of institutional practice and values was developed. Against this backdrop, a survey of 50 individuals followed by semi-structured interviews provided information about seamless mobile learning projects. Mobile learning was often fragmented and ad hoc, rather than part of a longer, seamless learning project. A distinction between just-in-time learning and just-in-case learning was apparent, with the latter often postponed. For mobile workers, mobile learning focused on current work setting, whereas workers who could work in many interchangeable settings might move to somewhere they could concentrate. Mobile learning was sometimes motivated by a sense of a lack of time and a need to stay 'on top of things' as much as by interest in a topic. Sustained seamless mobile learning projects occurred if there was institutional support for learning that was also of individual interest and if learners had the ability to orchestrate their learning. Learners reported these seamless mobile learning projects to be enjoyable and compelling. This paper contributes to the evidence of seamless mobile learning practice over the life course and illustrates the value of considering an individual's relation to various "institutions" in conceptualisations of seamless mobile learning. It also offers pointers for the future design of seamless mobile learning tools including a need to offer learners the opportunity to sometimes separate ongoing learning which is related to distinct institutions.