Osea Island, a 380-acre private island in Essex, offers a unique opportunity to purchase a self-contained and self-sufficient island with an established revenue stream and excellent reputation. The island has a rich history, with evidence of Viking, Norman, and Roman eras, and has been home to the Charrington brewing family and a secret naval base during World War I. The island features 38 residential properties, ranging from luxurious apartments to cottages, as well as commercial properties and event spaces. The island has its own infrastructure, including a Roman Causeway, jetty, dry dock, light aircraft landing strip, and helicopter landing area. With excellent road and rail links to central London, Osea Island offers a range of potential uses, including festivals, glamping, hotel and leisure, sporting venue, retreat, spa and wellness, holiday lets, film location, and exclusive private venue. The island is currently owned by a single family and has been enhanced and refurbished to provide a luxury retreat with state-of-the-art recording studio facilities and world-class event and holiday letting business.