This dataset describes the effects of three neonicotinoid seed treatments (clothianidin, thiamethoxam and a control) applied to winter sown oilseed rape in Hungary, Germany and the UK on wild pollinators. This dataset focuses on two wild pollinator model systems, specifically the solitary bee Osmia bicornis and bumblebee Bombus terrestris. The data describes population responses in terms of reproductive cell production (O. bicornis), numbers of different developmental stages in colonies (B. terrestris) as well as the presence of neonicotinoid residues in pollen and nectar collected by both species. This research was undertaken in 2015 using funding from the Natural Environmental Research Council on an experimental platform funded by Syngenta Ltd. and Bayer CropScience. Full details about this dataset can be found at https://doi.org/10.5285/b75b40f6-cdb1-4bfd-a599-bd2e171512e7
