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The Great Britain Guide

Islands · East of England

Cobmarsh Island

Free admission

Cobmarsh Island — island in Essex, United Kingdom.

Cobmarsh Island, islands in Essex

Wikimedia Commons licence

Plan your visit

Typical visit
4 h–12 h
  • Free entry
  • Dog-friendly

About

Cobmarsh Island is an island off the coast of Essex, East of England. The site is a designated Site of Special Scientific Interest, and is a Ramsar wetland of international importance. It sits within the Harwich and North Essex parliamentary constituency. Postcode area CO5.

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Protected designations

  • Site of Special Scientific Interest: Blackwater Estuary SSSI
  • Ramsar wetland: Blackwater Estuary (Mid-Essex Coast Phase 4)

Designations sourced from Natural England open data under OGL v3.

Place summary

Cobmarsh Island is an island located in the East of England, within the parish of West Mersea, Essex. It is designated as a Site of Special Scientific Interest (SSSI) and is part of the RAMSAR site for the Blackwater Estuary. The island is notable for its ecological significance within the Mid-Essex Coast.

AI-generated from the structured facts on this page (operator, designation, listing, era). Not a substitute for visiting.

Coordinates
51.7718, 0.8988
County
Essex
District
Colchester
Parish
West Mersea
Postcode
CO5 8LT
Parliamentary constituency
Harwich and North Essex

Sources

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Frequently asked questions

Where is Cobmarsh Island?
Cobmarsh Island is in Essex, East of England, United Kingdom (postcode CO5 8LT), in the parish of West Mersea.
Is Cobmarsh Island a protected site?
Yes — Cobmarsh Island is part of the Blackwater Estuary SSSI Site of Special Scientific Interest and the Blackwater Estuary (Mid-Essex Coast Phase 4) Ramsar wetland.
Is Cobmarsh Island free to visit?
Yes, Cobmarsh Island is free to enter.
How do I get to Cobmarsh Island?
Drivers can navigate to postcode CO5 8LT. It sits within the Harwich and North Essex parliamentary constituency.