Site of the Tilbury Fort in England (5)

I believe the answer is:

essex

(Other definitions for essex that I've seen before include "County NE of London" , "Chelmsford area" , "County adjoining London" , "County on Thames estuary" , "Chelmsford's county" .)

I've seen this clue in The Washington Post.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.