Although Baptists and Anglicans share a common faith in the Holy Trinity and in Christ as Lord and Saviour, they may seem poles apart in their understandings of the Church. This report, arising from more than a decade of dialogue between the Baptist Union of Great Britain and the Church of England, reveals surprising convergence, especially in the deeper patterns of Christian initiation and pastoral oversight. Pushing at the Boundaries of Unity is an unusual and innovative report and breaks the mould of ecumenical dialogue. It points to closer practical collaboration in mission between Anglicans and Baptists. It also puts a series of far-reaching challenges to both communions, especially with regard to their baptismal practices, encouraging discussion and response in an ongoing conversation.