CM20 3NL maps, stats, and open data

CM20 3NL lies on Long Ley in Harlow. CM20 3NL is located in the Netteswell electoral ward, within the local authority district of Harlow and the English Parliamentary constituency of Harlow. The Sub Integrated Care Board (ICB) Location is NHS Hertfordshire and West Essex ICB - 07H and the police force is Essex. This postcode has been in use since January 1980.

CM20 3NL maps

CM20 3NL map - OS OpenMap – Local (Ordnance Survey)

CM20 3NL map - OS VectorMap District (Ordnance Survey)

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Source: OS OpenMap – Local (Ordnance Survey)
Source: OS VectorMap District (Ordnance Survey)
Licence: Open Government Licence (requires attribution)

CM20 3NL geodata

Easting	545977
Northing	209789
Latitude	51.767753
Longitude	0.114096

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Source: Open Postcode Geo
Licence: Open Government Licence

Where is CM20 3NL?

Street	Long Ley
Town/City	Harlow
Country	England
Postcode District	CM20
➜ See where CM20 is on a map ➜ Where is Harlow?

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Source: Land Registry Price Paid Data
Licence: Open Government Licence

CM20 3NL Elevation

Elevation or altitude of CM20 3NL as distance above sea level:

	Metres	Feet
Elevation	70m	230ft

Elevation is measured from the approximate centre of the postcode, to the nearest point on an OS contour line from OS Terrain 50, which has contour spacing of ten vertical metres.

➜ How high above sea level am I? Find the elevation of your current position using your device's GPS.

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Source: Open Postcode Elevation
Licence: Open Government Licence

Politics

Ward	Netteswell
Constituency	Harlow

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Source: ONS Postcode Database
Licence: Open Government Licence

House Prices

Sales of detached houses in CM20 3NL

143, LONG LEY, HARLOW, CM20 3NL 2021 18 NOV £278,000

➜ Harlow house prices

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Source: HM Land Registry Price Paid Data
Licence: Contains HM Land Registry data © Crown copyright and database right 2025. This data is licensed under the Open Government Licence v3.0.

Transport

Nearest bus stops to CM20 3NL

Maddox Road (Howard Way)	Harlow	134m
Long Ley (Maddox Road)	Harlow	168m
Long Ley (Maddox Road)	Harlow	170m
Heart And Club (Maddox Road)	Harlow	197m
Quarry Spring (Momples Road)	Harlow	206m

Nearest railway stations to CM20 3NL

Harlow Town Station	2km
Harlow Mill Station	2.8km

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Source: NaPTAN
Licence: Open Government Licence

Broadband

Broadband access in CM20 3NL (2020 data)

Percentage of properties with Next Generation Access	100.0%
Percentage of properties with Superfast Broadband	100.0%
Percentage of properties with Ultrafast Broadband	100.0%
Percentage of properties with Full Fibre Broadband	0.0%

Superfast Broadband is between 30Mbps and 300Mbps
Ultrafast Broadband is > 300Mbps

Broadband speed in CM20 3NL (2019 data)

Download

Median download speed	29.4Mbps
Average download speed	53.6Mbps
Maximum download speed	200.00Mbps

Upload

Median upload speed	4.3Mbps
Average upload speed	3.6Mbps
Maximum upload speed	9.22Mbps

Broadband limitations in CM20 3NL (2020 data)

Percentage of properties unable to receive 2Mbps	0.0%
Percentage of properties unable to receive 5Mbps	0.0%
Percentage of properties unable to receive 10Mbps	0.0%
Percentage of properties unable to receive 30Mbps	0.0%

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Source: Ofcom
Licence: Ofcom Terms of Use (requires attribution)

CM20 3NL gas and electricity consumption

Estimated total energy consumption in CM20 3NL by fuel type, 2015.

Gas

Consumption (kWh)	598,436
Meter count	52
Mean (kWh/meter)	11,508
Median (kWh/meter)	11,648

Electricity

Consumption (kWh)	159,369
Meter count	52
Mean (kWh/meter)	3,065
Median (kWh/meter)	2,901

Consumption: The estimated total energy consumption, in kWh, across all meters in CM20 3NL, for 2015.
Meter count: The total number of meters in CM20 3NL.
Mean: The mean average consumption per meter, in kWh.
Median: The median average consumption per meter, in kWh.

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Source: Postcode level gas estimates: 2015 (experimental)
Source: Postcode level electricity estimates: 2015 (experimental)
Licence: Open Government Licence

Deprivation

71.3% of English postcodes are less deprived than CM20 3NL:

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Source: ONS Postcode Database
Licence: Open Government Licence

Food Standards Agency

Three nearest food hygiene ratings to CM20 3NL (metres)

Netteswell Pharmacy

1 Pypers Hatch

167m

The Heart And Club

Pypers Hatch

167m

Pypers Hatch Food & Wine

3 Pypers Hatch

167m

➜ Get more ratings from the Food Standards Agency

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Source: Food Standards Agency
Licence: FSA terms & conditions

Nearest post box to CM20 3NL

	Last Collection
Location	Mon-Fri	Sat	Distance
Pittmans Field	17:45	12:00	1,092m
Five Acres	17:30	12:15	1,724m
Tanys Dell	17:15	12:00	1,948m

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Source: Dracos
Licence: Creative Commons Attribution-ShareAlike

CM20 3NL ITL and CM20 3NL LAU

The below table lists the International Territorial Level (ITL) codes (formerly Nomenclature of Territorial Units for Statistics (NUTS) codes) and Local Administrative Units (LAU) codes for CM20 3NL:

ITL 1 Code	Name
TLH	East
ITL 2 Code	Name
TLH3	Essex
ITL 3 Code	Name
TLH35	West Essex
LAU 1 Code	Name
E07000073	Harlow

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Source: ONS Postcode Directory
Licence: Open Government Licence

CM20 3NL census areas

The below table lists the Census Output Area (OA), Lower Layer Super Output Area (LSOA), and Middle Layer Super Output Area (MSOA) for CM20 3NL:

	Code	Name
OA	E00111003
LSOA	E01021852	Harlow 003D
MSOA	E02004546	Harlow 003

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Source: ONS Postcode Directory
Licence: Open Government Licence

Nearest postcodes to CM20 3NL

CM20 3NN	Long Ley	97m
CM20 3NJ	Long Ley	102m
CM20 3NW	Long Ley	130m
CM20 3HP	Quarry Spring	170m
CM20 3NP	Long Ley	193m
CM20 3HJ	Tunnmeade	224m
CM20 3NH	Long Ley	239m
CM20 3HR	Quarry Spring	255m
CM20 3HT	Quarry Spring	258m
CM20 3HL	Tunnmeade	298m

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Source: Open Postcode Geo; Land Registry Price Paid Data
Licence: Open Government Licence