RM4 postcode district: Havering and around

RM4 is a postcode district mostly in Essex, with 160 postcodes in use in 1 sector. It has postcodes in Havering. It is split between 3 councils: Epping Forest (118 postcodes), Havering (28) and Brentwood (14). 132 are in Essex. ONS lists no county for the other 28.

Postcodes in use: 160
Sectors: 1
Councils: 3 councils
Places: Havering

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026. See all our data sources

Every postcode in RM4, and which are new since 2020

New since 2020: 9
In use before 2020: 151
Outline: where 5 or more new postcodes since 2020 lie together

Of the 160 postcodes in RM4 that ONS places, 9 are new since 2020 and 151 were in use before 2020.

Each mark is a postcode's centre point as ONS gives it, not a building. Press one to see its postcode and open its page. New since 2020 means it came into use in January 2020 or later. A dashed outline shows where 5 or more lie within 400 metres of each other. It is not a boundary, and no boundary is drawn. Where marks overlap, the one first in the key is drawn; the counts include every postcode.

The middle of its postcodes: latitude 51.6412, longitude 0.1593. Open this area on OpenStreetMap

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026, the centre point of each postcode; when each came into use: the same directory; roads, rivers and built-up areas: Contains OS data © Crown copyright and database right 2026. Drawn by us. Street map: Ordnance Survey, OS Open Zoomstack, Open Government Licence v3.0, drawn with MapLibre. How we use them

The 5 newest postcodes

RM4 1FFApril 2025 RM4 1FEMarch 2025 RM4 1FLOctober 2024 RM4 1FHApril 2024 RM4 1FDOctober 2023

Further out, not drawn

This postcode lies well apart from the rest, so the map is drawn without it to show the rest closer; it is in every count.

RM4 1UY

Where the new postcodes lie together

5 new postcodes since 2020, outlined on the map. RM4 1FF, is the newest of them.

What broadband can you get in RM4?

Ofcom reports on 153 of the 160 postcodes in RM4. At 87 of them every home and business can get gigabit broadband, and at 7 some cannot get decent broadband (10 Mbit/s).

Postcodes where every home can get gigabit87 of 153

Postcodes where every home can get superfast110 of 153

Postcodes where some cannot get decent broadband7 of 153

Ofcom gives each postcode's share of homes and businesses, not how many there are, so these count postcodes. Each postcode page has its own figures. A provider's checker answers for one address.

Check one address on Ofcom's checker

Source: Ofcom, Connected Nations, Spring 2026, data for January 2026, Open Government Licence v3.0. How we use it

Is RM4 at risk of flooding?

15 of the 160 postcodes in RM4 have a home or business in an area at risk of flooding from rivers or the sea, the Environment Agency says. At those, it puts 34 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 15 of 160 postcodes High: 15Medium: 19Low: 54Very low: 13

High: 3.3% or more a year (1 in 30). Medium: 1% to 3.3% a year. Low: 0.1% to 1% a year. Very low: under 0.1% a year (1 in 1,000). Each band is the chance of flooding in any one year.

Homes and businesses in an area at risk of flooding from rivers or the sea, as the Environment Agency counts them, added up over the postcodes. It is for the land, not each building, and leaves out surface water, groundwater and sewers. Each postcode page has its own figures and its flood warning areas.

Source: Environment Agency, Risk of Flooding from Rivers and Sea (postcodes in areas at risk), published 6 July 2026, Open Government Licence v3.0. How we use it

What do homes sell for in RM4?

Homes in RM4 sold for a typical £580,000 in the 12 months to August 2026, across 39 sales, down 11.2% on the 12 months before, HM Land Registry's figures show.

£580,000 typical price, the 12 months to August 2026

£653,000 12 months to August 2025

▼ down 11.2% on the 12 months before

Detached £832,500 22 sales
Semi-detached £510,000 5 sales
Terraced £490,000 11 sales
Flat or maisonette 1 sale, too few to price

Each bar is that kind's typical price, against the most expensive kind here.

Standard sales of homes at market value. A typical price is the median, the middle sale. Sales take weeks to be registered, so the last month or two are incomplete. Each postcode page gives the figure for its own postcode sector.

Source: HM Land Registry Price Paid Data, files dated 28 September 2026. Contains HM Land Registry data © Crown copyright and database right 2021. This data is licensed under the Open Government Licence v3.0. How we use it