The Strategic UK CO2 Storage Appraisal project completed and published in early 2016 by the ETI/DECC confirmed that the UK Continental Shelf (UKCS) is endowed with a rich and diverse national offshore CO2 storage resource that could be mobilised into service readiness without extensive appraisal programmes. This is due to a wealth of prior knowledge arising from decades of petroleum exploration and development activity from commercial and national organisations. Whilst the UKCS hosts many high quality potential storage sites, the ETI project concluded that the UK’s requirements for CO2 storage through to 2070 could be accommodated by the mobilisation and development of just 8 sites. This portfolio of 8 sites spans a range of geography, geological storage types, development timetables and development risk. Further details are provided here.