Mersea Outdoors
- The centre, for outdoor learning, accommodates residents under canvas or in cabins. Facilities include a swimming pool, assault course, high ropes course, climbing and abseiling towers, aerial runway, caving course, and access to the beach.
- http://www.merseaoutdoors.com/

Mersea Island Vineyard
- A family owned business providing bed and breakfast accommodation, English wines and vineyard tours. Includes description of services and contact details.
- http://www.merseawine.com/

East Mersea Youth Camp
- Runs camps covering a range of interest groups, offers a number of qualification based training courses, and is available for group rental. Programmes, facilities, FAQ and booking form.
- http://www.eastmerseacamp.co.uk/

Cosway Holiday Home Park
- A family run park with privately owned holiday homes sited in landscaped surroundings. Includes description of services and contact details.
- http://www.cosways.co.uk/