The two visits of Germanus to Britain that Constantius included in his Life of the saint were long a staple of insular history. Recently, however, they have come under close scrutiny, leading to the second visit in particular being considered unhistorical. This essay re-examines the two visits in the context of the whole work, concluding that Constantius had access to good-quality information for Germanus's activities. Focusing on two episodes of the first visit, Germanus's journey to the cult site of St Alban and the ‘Alleluia Victory’, allows us to explore what the bishop achieved in Britain. Recent suggestions that Germanus effectively ‘invented’ the cult of St Alban arguably go beyond the evidence available, but the bishop's interaction with the cult was an important, planned part of his anti-Pelagian strategy. The passages describing the two visits are also explored in terms of Constantius's wider purposes in writing the Life. In those terms his investment in stories regarding Germanus in Britain enabled him to develop his hero in ways which accord with his overall vision of an exemplary bishop. Germanus's deeds in Britain, therefore, need to be read both in terms of what they can offer in terms of British history and in the context of this author's wider agenda.