The dataset contains the isotopic composition of aquatic carbon forms obtained from peatland pools across six locations in Scotland and Northern Ireland. Samples were collected from the surface of peatland ponds. Variables include radiocarbon (14C) content, stable carbon (δ13C) isotopic content, and associated data used in the data analysis in the published manuscript collected from the study locations in 2014 and 2015. Full details about this dataset can be found at https://doi.org/10.5285/d417b1b9-eaba-4b9d-ba2c-dfb53973b113
