Some scenes were filmed at the famous Tilbury Fort in Essex, originally built by Henry VIII and the site of Elizabeth I's renowned speech to her troops during the war against the Spanish Armada.

It's not just about industry though, it's also home to Tilbury Fort, built by Henry VIII - it's been praised as potentially the best example of a 17th-century artillery fortress in our isles.

On the Kent bank lays the important river town of Gravesend. Opposite, on the Essex coast, stands Tilbury Fort, a great fortress that has protected London from naval attack since the days of Henry ...