[holding answer 10 February 2009]: The most recent projections of sea level rise around the UK for 2020 come from a 2006 update to the UK Climate Impacts Programme UKCIP02 climate change scenarios published in 2002. These figures give sea level rise projections for the 2020s of 0-19 cm (relative to the 1961-90 average) depending on region and emissions scenario. The information can be viewed at:
Updated sea level rise figures will be available from the upcoming UK Climate Projections (UKCP09) due for release in spring 2009.
The Department for Environment, Food and Rural Affairs’ Flood Management Programme has also published guidance (in 2006) on climate change impacts for decision making and adaptation purposes in flood and coastal erosion risk management. This guidance can be accessed at: