Traditionally, 'ending' research is a stage in the research process that is not widely explored. However, recently, some concerns have been expressed regarding the effects that ending participatory research may have on some people with learning disabilities. Given the importance of research which promotes their active participation it is thus important that researchers seeking to engage in such research consider carefully the challenges which may arise. In this paper, therefore, some key implications are considered and an argument is put forward that researchers should consider these implications before commencing work on participatory research projects. This means that 'ending' research is a stage in the research process which needs to be given much more emphasis than has previously been the case. copy; 2000 Sage Publications.