Name: Coastal Connection Weekend
Start: 2026-11-13T09:00:00
End: 2026-11-15T22:00:00
Location: Osea Island

Overview
Brochures
Events
Rooms
Location

About Osea Island

Osea Island is a space that has a rich and enchanting history. It has been occupied for over 5000 years and to this day, a number of neolithic villages remain, along with viking burial grounds that hosted the famous battle of Maldon in 991 AD. After the war, Osea fell into the ownership of Cambridge University, and was declared a site of special scientific interest because of its unique ecology, rare plants, birds and marine life. Despite still being home to these beautiful gifts from nature, it returned to private ownership in the 1950s and has now become a centre for classic sailing boats.

If you're hosting a special event, then book out Osea Island, as whatever the occasion, the team will work with you to create something that creates memories that will last for many years to come. The venue stands out, being so rich in history and a space of beauty, this tidal island is uniquely close to the city and has capacity to host intimate gatherings and larger scale events. Here, you'll find a range of stylish houses, cottages and apartments that can accommodate your guests.

The Shack is a space with a variety of indoor and outdoor event spaces and has a 24 hours music and drinks license. The Bomb Factory, on the other hand, The Shack is a space with a variety of indoor and outdoor event spaces and has a 24 hours music and drinks license. Built during the First World War, Power House was used to house the island's electricity generating station, and now, this lofty character space is a popular choice for events that need a blank canvas – like wedding ceremonies. Lastly, The Puffin is a 300 year old building that has low beamed ceilings and an Inglenook fireplace. On site, there is a private dining room and meeting room, which is able to be booked separately.

Good to know

Delegates/Guests

Up to 500

Venue Hire Cost

Modest, Top End

Event Type

Anniversary party, Baby shower, Birthday party, Bridal shower, Conference, Corporate event, Corporate party, Drinks reception, Engagement party, Exhibition, Filming/photography location, Garden party, Hybrid event, Meeting rooms, Summer party, Team building

Venue Type

Bar, Boat, Country house, Function room, Hall, Pub

Venue Style

Blank canvas, Cool, Corporate, Creative, Fun, Historic, Light and bright, Modern, Outdoor, Quirky and unique, Waterside

This venue also offers

Wedding Venues

Osea Island

Osea Island is featured in

The best summer party venues in the UK

The UK's most unusual venues for hire

The best conference venues in the UK

Osea Island Brochures

Boutique Glamping Brochure Supplier Directory Corporate Brochure The Bomb Factory The Shack The Power House Catering Brochure Wedding Brochure

Osea Island Events

Free

Event

Coastal Connection Weekend

13 Nov 2026 until 15 Nov 2026

Ever been curious to learn more about Osea Island’s rich wildlife and history?

During our Coastal Connection weekend, you have the chance to uncover all areas of the island and explore the incredible wildlife that calls the Blackwater Estuary home.

Through hands-on beach exploration and guided discovery walks, you’ll connect with the island’s surroundings while learning more about its rich history.

Round off the experience with a delicious 2-course meal, made from locally sourced ingredients, and enjoy drinks and live music round the fire as the evening falls.

Osea Island Rooms

The Shack

Meeting

180

Standing

Banquet

100

Theatre

Room size: 135m²

Full of charm and character, our shack is a remnant of the WWI naval base SS Osea that operated in the island during the war period. Used for entertainment and social gatherings at that time, still today one of Osea’s favourite venues with its shack chic interior design and memorabilia.

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The Power House

Meeting

250

Standing

100

Banquet

120

Theatre

Room size: 164m²

Our converted wartime power station was built as an extra power supply facility during the Island’s Royal Navy period and still maintains today many of its original structural features. A unique and versatile space with a warehouse loft feel, high ceilings, industrial beams and full of natural light, this calm and peaceful venue is the perfect blank canvas for any event!

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The Puffin

Meeting

Standing

Banquet

This 300 year old building with its low beamed ceilings and Inglenook fireplace oozes character. It also has a private dining room/meeting room which can be booked separately.

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The Bomb Factory

190

Meeting

500

Standing

245

Banquet

350

Theatre

Room size: 780m²

Our converted WWI torpedo production facility is the largest venue on the Island. The industrial ambiance with its long shape and exposed brick walls, is complemented by outdoor terraces on both sides and open views to Osea’s fields. The perfect all purpose event space and a blank canvas to create the ultimate event experience – discuss and develop, wine and dine, dance and shake!

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Location

Osea Island, Maldon, Essex, CM9 8UH

02030 264 067

Website

Testimonials for Osea Island

The TimesOCTOBER, 2025

Osea Island in the Blackwater estuary, Essex, is frequented by Cara Delevingne, Kate Moss and Sienna Miller. There may not be an Isle of Wight festival but the private island is the setting for private parties and festivals. If you’re not on the guest list, you can book to stay another time in the pretty clapboard cottages.

Anna Murphy

World Travel BlogJUNE, 2024

Sitting here on that Sunday evening, drinking a good bottle of Shiraz over the tender echo of Radio 2, was a few hours of perfect bliss; it was as if I‘d be allowed to relieve someone else‘s memory of the 40s, I was my very own Captain Jack in the war, imbued with all the romance and adventure of a bygone era.

Nice Burton

The GuardianJANUARY, 2024

Osea‘s philosophy is a laissez-faire one: visitors can wander anywhere, help themselves to Raleigh Chloe bikes – with special fat tyres for the tracks and beaches – borrow DVDs from the library, play pool and table tennis. In the summer there is croquet, mini golf and beach volleyball, you can swim in the heated outdoor pool and of course the sea. There are few notices and only a couple of hand-painted signs – to ‘the bomb factory’ and ‘the shack’, both of which are converted warehouses with dance floors empty and waiting for the music.

Patrick Barkham

FAQs

Does Osea Island have accommodation on site?

Yes, Osea has 87 bedrooms, with 118 beds, across the 28 properties and we can extend accommodation with Glamping. We offer a minimum one night stay for all events

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