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The nuclear regulators have completed GDA Steps 1 and 2 for four reactor designs (AECL's ACR1000, Areva's European Pressurised Water Reactor (EPR), GE-Hitachi's ESBWR and Toshiba-Westinghouse's API000) and a series of reports were published on the Health and Safety Executive's website in March 2008.
ACR-1000 and ESBWR have been, respectively, withdrawn and suspended from the GDA process at the request of the vendors.
HSE's Nuclear Installations Inspectorate (NII) is currently part-way through step 3 of a four step assessment process. NII aims to publish its step 3 findings in November 2009 and its step 4 findings in June 2011.