WD18 postcode area guide — Three Rivers

Where is WD18?

Broadband & internet speeds in WD18

Excellent coverage

Broadband availability in the WD18 postcode district (Three Rivers) is Excellent — gigabit-capable full fibre is widely available. Across the 606 postcodes Ofcom measures in WD18, superfast broadband (30 Mbit/s or faster) reaches 97.9% of premises and gigabit-capable lines are available to 89.4%.

Around 0% of premises in WD18 fall below the Universal Service Obligation (a minimum of 10 Mbit/s download and 1 Mbit/s upload), so the overwhelming majority of homes and businesses here can already order a decent fixed line. For a business that depends on its connection, the figures that matter most are gigabit and full-fibre availability — the symmetric, low-contention services we quote leased lines and FTTP against.

Sample postcodes in WD18

Run a speed test to see what you're actually getting, or check your exact postcode.

Mobile signal around Three Rivers

Ofcom's coverage model for the wider Three Rivers district (40,620 premises):

Signal varies street by street — use the mobile coverage checker to compare EE, O2, Three and Vodafone at an exact postcode.

Crime in WD18

Police recorded 492 incidents within about a mile of the centre of WD18 in May 2026 (latest published street-level data). The breakdown:

Raw counts favour busy town centres — a high street with shops and nightlife records more incidents than a residential cul-de-sac. Source: police.uk open data (point sample around the district centroid).

House prices in WD18

Based on 218 sales registered with HM Land Registry in the last 12 months, the median sold price in WD18 is £372,000, up 0.5% on the previous year (£370,000).

Latest recorded sales in WD18

Contains HM Land Registry data © Crown copyright and database right 2026, licensed under the Open Government Licence v3.0.

Who lives here? Three Rivers demographics

Census 2021 figures for the wider Three Rivers district (93,770 residents, 36,857 households):

Source: ONS Census 2021 (district level — the finest openly licensed cut we republish). © Crown copyright, OGL v3.0.

Schools in and around WD18

Source: DfE Get Information about Schools (England & Wales). Check Ofsted report cards for inspection detail — headline one-word grades were retired in 2024.

Food hygiene ratings in WD18

187 rated food businesses operate in WD18. 114 hold the top rating of 5, 31 are rated 4, and 4 are rated 2 or below.

Among the 5-rated: 2 Madrasi, Advent Care Solutions, Afro Mini Market, Aksah Petroleum UK Ltd, Amanartis, Baking Bread.

Source: Food Standards Agency, food hygiene ratings (FHRS) open data.

Energy performance (EPC) in WD18

From a sample of 289 Energy Performance Certificates across 10 WD18 postcodes, the most common rating is band C (average band C). 69% of sampled homes are rated C or better.

Source: MHCLG Energy Performance of Buildings Data (England & Wales), sampled at postcode level and refreshed monthly. Individual certificates are on each postcode’s page.

Phone area codes for Three Rivers

Landlines around WD18 typically use:

Had a call from an unknown number? Use our free UK phone number checker to see who called.

What's it like living in WD18?

Postcodes in WD18

Neighbouring districts

All Watford (WD) postcode districts ›

Frequently asked questions

Sources: HM Land Registry Price Paid Data, police.uk street-level crime, Ofcom Connected Nations, ONS Census 2021, DfE Get Information about Schools, Food Standards Agency FHRS — all © Crown copyright, licensed under the Open Government Licence v3.0. Figures are area aggregates; individual addresses vary. Energy performance (EPC) data will be added when our Open Data Communities registration is approved.