| Sewardstone | |
|---|---|
 Sewardstone Marsh is part of the Lee Valley Park | |
  Sewardstone Location within Essex | |
| OS grid reference | TQ385975 |
| Civil parish | |
| District | |
| Shire county | |
| Region | |
| Country | England |
| Sovereign state | United Kingdom |
| Post town | LONDON |
| Postcode district | E4 |
| Dialling code | 020 |
| Police | Essex |
| Fire | Essex |
| Ambulance | East of England |
| UK Parliament | |
Sewardstone is a hamlet in the parish of Waltham Abbey, in the Epping Forest District of Essex, England. It is located south of the main built-up area of Waltham Abbey, lying between Epping Forest, Chingford and Enfield. It is 11.6 miles north-northeast of Central London and is in the London commuter belt.