Hire your own magical private island 1 hour from London

Essex, England
Up to 119 people
87 bedrooms
$$
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Just over an hour’s drive from London, Osea Island is a 380-acre private island retreat in the Blackwater Estuary, Essex. It’s unique, spacious, and full of character – perfect for teams looking to connect, create, or switch up the pace somewhere completely different.

There are 38 houses to stay across the island, from cosy cottages to a grand Edwardian manor, offering up to 90 bedrooms in total. The island is available for exclusive hire, or for smaller groups, part-hire options are also available.

For team gatherings or meetings, choose from The Factory (seating up to ~190 or 500 standing), The Power House (up to ~80 seated or 250 standing), The Shack (licensed for music and events, ~140 standing), and The Puffin, the island’s private pub (up to ~50 standing or ~30 seated).

In between sessions, your team can explore communal gardens, ride fat‑tyre bikes, lounge by the heated outdoor pool, play croquet or volleyball, or walk the island’s five miles of shoreline and salt marsh.

You can also book in a mix of team activities like yoga, foraging, cooking classes, creative workshops, water sports, axe throwing, archery, clay pigeon shooting, and more.

There’s also a music studio, a games room, and a dedicated events team ready to help you design everything from parties to bespoke dining experiences.

Though it's hosted the likes of Rihanna, Stormzy, and Jude Law, what makes Osea lasting isn’t fame – it’s its unique sense of calm, history, and escape 🏝

Vetted by Basejam's retreat experts

We promise expert-vetted venues, total transparency and exceptional service.

Venue stories

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Go wild swimming, boating or take part in watersports
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Hold meetings, workshops or dinners in one of the many events spaces
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Take a refreshing dip in the outdoor pool

Accommodation styles

Country houseCottagePrivate island

Sleeping arrangements

Bunk bedsDouble bedsPull out bedsSingle beds

Venue amenities

Catering options availableSelf catering availableBarBreak out roomsEvent spaceMeeting roomSwimming poolGames room
from  £240  per room per night
For single occupancy. Switch to room sharing.
  • 🤝  Meeting space prices from £2,000 per day
  • 🍽️  Lunch/dinner packages available on request
Free to message venues
Pricing is listed as a guide, not a quote