In the English context, complementary alternative provisions (APs) can make specific positive contributions for young people at risk of exclusion from mainstream school. Whilst recognising the potential value of all complementary AP that is carefully selected and of high quality, we problematise the "repair and return" rationale that continues to underpin the commissioning of some provisions. Drawing on two case studies, we explicate the nature and value of partnership working between complementary provider and mainstream school. We argue that when a productive partnership happens (1) schools take greater responsibility for young people at risk of exclusion, and (2) there is the potential to encourage wider shifts in the learning context of the mainstream school in ways that are beneficial for a larger group of pupils. Such wider transformations in the mainstream context may be particularly beneficial given the current performative regimes that dominate English education policy, and focus schools' work on the achievement of key data targets rather than inclusive practice. We reflect on what can be learnt from these cases in relation to the evolving AP policy context in England.