Adm. Sir. George Zambellas, former First Sea Lord and former chief of naval staff of the Royal Navy, expresses doubt that the service can build the Type 31e frigate on budget and identifies design priorities for its during a Sept. 12, 2017, interview at the 2017 Defense and Security Equipment International conference and trade show in London. Zambellas also serves as a senior advisor at Liquid Robotics. Defense & Aerospace Report's coverage is in partnership with DSEI and Clarion Events.