Eastern Region Postcodes
| AREA | POSTCODE AREA (Entire Postcode Area is within the regional boundary) | POSTCODE DISTRICT (Where the Postcode Area is split across regional boundaries) | POSTCODE SECTOR (Where the Postcode District is split across regional boundaries) |
| Cambridge | CB |
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| Central London | C |
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| Chelmsford | CM |
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| Colchester | CO |
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| East London | E |
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| East Central London | EC |
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| Enfield | EN |
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| Illford | IG |
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| Ipswich | IP |
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| North London | N |
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| North West London |
| NW1, NW3, NW4, NW5, NW7, NW11 |
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| Norwich | NR |
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| Peterborough |
| PE1, PE2, PE3, PE4, PE5, PE6, PE7, PE8, PE9, PE13, PE14, PE15, PE16, PE19, PE26, PE27, PE28, PE29, PE30, PE31, PE32, PE33, PE34, PE35, PE36, PE37, PE38 |
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| Romford | RM |
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| Southend-on-Sea | SS |
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| St Albans | AL |
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| Stevenage |
| SG1, SG2, SG3, SG4, SG6, SG7, SG8, SG9, SG10, SG11, SG12, SG13, SG14 | SG5 1, SG5 2, SG5 3, SG19 3 |
| Watford |
| WD5, WD6, WD7, WD25 |







