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The status of hydrogen technologies in the UK: A multi-disciplinary reviewHydrogen has the potential to offer deep decarbonisation across a range of global heavy-emitting sectors. To have an impact on the global energy system, hydrogen technologies must be deployed with greater urgency. This review article facilitates the much needed, multi-disciplinary discussion around hydrogen. In doing so, the paper outlines recent advancements, prevailing challenges and areas of future research concerning hydrogen technologies, policy, regulation and social considerations in a UK setting. Findings suggest that hydrogen will play a significant role in decarbonising several UK sectors whilst simultaneously addressing challenges faced by alternative low-carbon technologies. Optimal production, delivery and storage systems must be developed to accommodate perceived future demand. Whilst this will be largely dictated by scale, efficiency, cost and technological maturity, significant improvements in existing policies and regulation will also be critical. The future role of hydrogen in the UK’s decarbonisation strategy is not clearly defined. In comparison to alternative low- carbon technologies, policy and regulatory support for hydrogen has been minimal. Whilst there is growing evidence concerning the public perception of hydrogen in UK homes, additional research is required given its many potential applications. The findings detailed in this article support the urgency for further multi- disciplinary collaborative research.