The RETURN project uses eco-friendly liquid salts and low-energy electrochemical processes to recover >99% of the metals contained in waste PCBs panels. It utilises digital recognition, assessment and sorting, working in parallel with Digital Product Passport systems and a Dynamic Digital Marketplace to return recovered or repaired components and materials to EU markets. The impact is maximised by commercially attractive circular or closed-loop recycling of e-waste with facilities located directly into existing recycling centres at low investment levels. Sustainability and techno-economic viability assessments are built into all stages, assisting decision making and contributing to commercially useful performance and sustainability data to support post-project exploitation.