Used European electric and electronic equipment (UEEE) has multiple use cycles in various countries, including Nigeria. Although the EU-Nigeria e-waste trade is illegal under EU and Nigerian law, previous research shows that some imported equipment is only fit for disposal. Imported UEEE has a short lifespan. Such European e-waste exports imported to Nigeria have sustainability and circularity implications for both places and raise questions about justice and equity. Using a transdisciplinary approach, we identify existing practices and challenges in Nigeria and co-create actionable solutions towards a sustainable, circular and fairness-driven UEEE and e-waste value chain. We find current extended producer responsibility (EPR) does not focus on the entire global value chain, is linear, and lacks transparency, accountability, and consideration for spatial equity. To overcome these shortcomings, we propose ultimate producer responsibility (UPR). UPR aids sustainability and circularity transition while paying attention to justice and equity.The research adds global and social dimensions to the European circular economy (CE), otherwise primarily focused on national material cycles.