| Hornchurch Marshes | |
|---|---|
 | |
  Hornchurch Marshes Location within Greater London | |
| Population | 8,831 (Hornchurch Marshes MSOA, E02000491, 2011 Census) |
| OS grid reference | TQ 504821 |
| • Charing Cross | 13.6 mi (21.9 km) W |
| London borough | |
| Ceremonial county | Greater London |
| Region | |
| Country | England |
| Sovereign state | United Kingdom |
| Post town | RAINHAM |
| Postcode district | RM13 |
| Dialling code | 020 |
| Police | Metropolitan |
| Fire | London |
| Ambulance | London |
| UK Parliament | |
| London Assembly | |
Hornchurch Marshes is an area of the London Borough of Havering, adjacent to the north bank of the River Thames in London, England. Susceptible to flooding from three adjacent rivers, it was the southernmost marshland section of the ancient parish of Hornchurch. It was used for cattle grazing from the 16th to the 19th century and became industrialised by the 20th century. The eastern part of the Ford Dagenham estate extended into the Hornchurch Marshes and it is now an area of regeneration that includes Beam Reach and part of Beam Park. Two of the Dagenham wind turbines are located there and the Centre for Engineering and Manufacturing Excellence.