The Flag Deck offers unmatched sights of downtown London. Explore every nook and cranny of this historic vessel and feel like you're traveling back in time! Ascend the 9 spectacular decks on the HMS Belfast. Access to the HMS Belfast. Multi-language audio guide. Give the gift of unlimited variety for events on Fever! Check out the Fever Gift Cards here. It is suggested that individuals wear comfortable footwear when visiting. Children 4 and under access free. All ticket sales are final and cannot be refunded, exchanged, or otherwise modified. Click here to check out the T&Cs.