if they made a material contribution of at least 1%. We also included customer shopping trip emissions. PAS 2050 says that the 1% cut-off limit should reduce the effort of collecting data which do not make a significant contribution to the study. We only found out the proportion of the contribution as we had finished modelling. Since their contribution was minor, they were not excluded again from the PCF. We included the consumer shopping trip because it was an essential parameter in the analysed supply chains.