The dataset details surface elevation and sedimentation measurements across five UK saltmarsh sites. Two of the sites were in Morecambe Bay, North West England and three of the sites were in Essex, South East England, each of these sites consisted of a saltmarsh area and adjacent mudflat area. Rod Sedimentation-Erosion Tables (rSETs) were installed at different distances from the vegetated margin. Three rSETs were deployed for each Essex site and four for the Morecambe sites. rSET benchmarks were installed with associated marker horizons to evaluate surface elevation changes and surface accretion respectively. This data was collected as part of Coastal Biodiversity and Ecosystem Service Sustainability (CBESS): NE/J015644/1. The project was funded with support from the Biodiversity and Ecosystem Service Sustainability (BESS) programme. BESS is a six-year programme (2011-2017) funded by the UK Natural Environment Research Council (NERC) and the Biotechnology and Biological Sciences Research Council (BBSRC) as part of the UK's Living with Environmental Change (LWEC) programme. Full details about this dataset can be found at https://doi.org/10.5285/b71f1244-3bc2-4b52-bf64-f3e479860e28

Presented here are compiled data of sediment accretion across UK saltmarshes. All data have been collected using globally standardised methods of monitoring sediment accretion using the rod Sediment Elevation Table – Marker Horizon (rSET-MH) methods. In 2023 UKCEH deployed sediment elevation tables in the Dornoch Firth, the Solway Firth, The Ribble, The Wash, North Norfolk and Chichester Harbour, the data for which are included here. Sites were monitored again using the same technique in the Spring of 2024. Marker horizons cores were also taken at sites in the Wash, North Norfolk, the Ribble and Chichester Harbour. Full details about this dataset can be found at https://doi.org/10.5285/0a82a174-b7e7-4474-badc-3a520aee9111