In this article, an evaluation of the English early childhood education context reveals children constructed as data. The complex, chaotic and unpredictable nature of the child is reconstituted in numerical form – a form which can be measured, compared and manipulated. Children are reconceptualised as data doppelgängers, ghostly apparitions which emulate the actual embodied child. The focus of early childhood education and care thus moves from child-centred to data-centred education. The author specifically focuses on the impact of this aspect of the performative regime on children who have English as an additional language – an under-researched area in the field. Foucault’s work on governmentality is used as a theoretical lens through which to understand the process of datafication. The author uses a composite child, generated from a number of children from her experience as a teacher, as a starting point for discussion. This reveals children as disadvantaged, as their home languages are no longer used to assess communication skills. Their data doppelgängers are not useful to the teacher as they are unable to demonstrate a Good Level of Development – a key measure of school readiness in English policy. The author argues that in post-Brexit-vote Britain, subtle changes to early childhood education increase disadvantage, promoting white, British culture and thus marginalising those from other cultures.