TN3 postcode area guide — Sevenoaks

Where is TN3?

Broadband & internet speeds in TN3

Good coverage

Broadband availability in the TN3 postcode district (Sevenoaks) is Good — superfast broadband reaches most premises. Across the 563 postcodes Ofcom measures in TN3, superfast broadband (30 Mbit/s or faster) reaches 90.4% of premises and gigabit-capable lines are available to 35.1%.

Around 0.6% of premises in TN3 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 TN3

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

Mobile signal around Sevenoaks

Ofcom's coverage model for the wider Sevenoaks district (54,619 premises):

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

Crime in TN3

Police recorded 85 incidents within about a mile of the centre of TN3 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 TN3

Based on 103 sales registered with HM Land Registry in the last 12 months, the median sold price in TN3 is £705,000, up 4.3% on the previous year (£676,000).

Latest recorded sales in TN3

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

Who lives here? Sevenoaks demographics

Census 2021 figures for the wider Sevenoaks district (120,511 residents, 49,014 households):

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

Schools in and around TN3

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 TN3

97 rated food businesses operate in TN3. 79 hold the top rating of 5, 12 are rated 4, and 2 are rated 2 or below.

Among the 5-rated: Abergavenny Arms, AIP At Lamberhurst St Marys C Of E School, AliKats Kids Club, Allkin, Amazon Adventure.

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

Energy performance (EPC) in TN3

From a sample of 63 Energy Performance Certificates across 11 TN3 postcodes, the most common rating is band D (average band D). 22% 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 Sevenoaks

Landlines around TN3 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 TN3?

Postcodes in TN3

Neighbouring districts

All Tonbridge (TN) 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.