“…Whilst increased involvement may demonstrate 'true' co-production, some elements of a study may not be appropriate to share. Hence, transparency and mutually agreed objectives, roles and boundaries are deemed necessary, wherever possible (Casey & Webb, 2019;Critchley et al, 2019;Dent, 2019 increased knowledge and experience of these formal interactions. Unfortunately, relationship building also runs the risk of causing power balance shifts if considerations such as cross-cultural respect, translators, fair incentives, anonymity and truly unbiased participant selection are not recognised (Casey & Webb, 2019;Duffy, 2017;Horgan et al, 2020;Lambert & Carr, 2018;NCC, 2019;NIHR, 2019;Pinfold et al, 2015).…”