Bruhn, HanneTreweek, ShaunWeijer, CharlesBriel, MatthiasClarke, MikeCrowley, RachelGillies, KatieGreen, HeidiMurphy, EllenParker, AdwoaHayes, Genevieve ShielyHart, PeterShiely, Frances2025-11-132025-08-02Bruhn, H, Treweek, S, Weijer, C, Briel, M, Clarke, M, Crowley, R, Gillies, K, Green, H, Murphy, E, Parker, A, Hayes, G S, Hart, P & Shiely, F 2025, 'Trial Forge Guidance 5 : ethical considerations in randomised Studies Within A Trial (SWATs)', Trials, vol. 26, 267. https://doi.org/10.1186/s13063-025-08958-91745-6215https://hdl.handle.net/2164/26443Acknowledgements We would like to thank our contributors in the consensus building fora who gave their time to enable this work. Special thanks are due to Dr Darren Dahly who contributed to the initial stages of the project.151313828engTrial methodologySWATStudy within a trialMethodology guidanceResearch ethicsTrial ForgeQ Science (General)R Medicine (General)Supplementary DataDASSupplementary InformationQ1R1Journal article10.1186/s13063-025-08958-9