The data consists of a short project update for the 2015/16 annual report and the final report for the project. The update describes work carried-out on behalf of the 'Fault seal controls on CO2 storage capacity in aquifers' project funded by the UKCCS Research Centre, grant number UKCCSRC-C1-14. The report details the latter stages of the project, the final conclusions and results dissemination throughout the project.