Worldwide, seaweed aquaculture has been developing at an unabated exponential pace over the last six decades. China, Japan, and Korea lead the world in terms of quantities produced. Other Asiatic countries, South America and East Africa have an increasingly significant contribution to the sector. On the other hand, Europe and North America have a long tradition of excellent research in phycology, yet hardly any experience in industrial seaweed cultivation. The Blue Growth economy agenda creates a strong driver to introduce seaweed aquaculture in the UK. GlobalSeaweed: - furthers NERC-funded research via novel collaborations with world-leading scientists; - imports know-how on seaweed cultivation and breeding into the UK; - develops training programs to fill a widening UK knowledge gap; - structures the seaweed sector to streamline the transfer of research results to the seaweed industry and policy makers at a global scale; - creates feedback mechanisms for identifying emergent issues in seaweed cultivation. This ambitious project will work towards three strands of deliverables: Knowledge creation, Knowledge Exchange and Training. Each of these strands will have specific impact on key beneficiary groups, each of which are required to empower the development of a strong UK seaweed cultivation industry. A multi-pronged research, training and financial sustainability roadmap is presented to achieve long-term global impact thanks to NERC's pump-priming contribution. The overarching legacy will be the creation of a well-connected global seaweed network which, through close collaboration with the United Nations University, will underpin the creation of a Seaweed International Project Office (post-completion of the IOF award).