One of the very few genuinely working fishing towns left in south Essex, close to a thousand years of continuous fishing activity, with cockles, shellfish and whitebait as the main catch, and cockle boats still working out of Old Leigh.
The bottle-green cockle sheds on Cockle Shed Row are a real trading cluster, not a heritage display: Osborne Bros has been a family firm here since the 1880s and now runs a fishmonger, cafe and seafood school from the sheds; Leigh Seafood also operates from Old Leigh. The Thames Estuary cockle fishery is MSC-certified.
Leigh Broadway is dominated by independents, cafes, restaurants, delis, boutiques and salons, rather than multiples, and independent hospitality is the visible growth trade, fed by day-trip footfall down to Old Leigh.
Leigh-on-Sea had a recorded population of about 22,568 at the 2021 census.