Multiple-pollutant cost-effectiveness of greenhouse gas mitigation measures in the UK agriculture

► Multiple-pollutant marginal abatement cost curves can inform integrated environmental policy. ► We incorporated the co-effects on NH3, NO3−, P and sediment, as monetary values, into the UK GHG MACC. ► Adding co-effects modifies the GHG MACC, though with little impact unless using high damage values. ► Further research is needed on the co-effects of GHG mitigation measures and on damage values. ► Analysis should focus on the co-effects of measures that are slightly above or below the threshold.