Thread Street London, Sutton
37 addresses across 3 postcodes (SM6), about 110 m long, classed as a local road. USRN 22606228.
- Sales: 43 recorded sales since 1995; in 2026 the median was £280,000 across 1 sale.
- Energy: 34 homes have an energy certificate (B: 25, C: 9).
- Flood: 22 addresses on its postcodes are in areas at high or medium risk of flooding from rivers, the sea or surface water.
- Council tax: Most homes around it are in council tax band D; Band D in Sutton costs £2,379 a year in 2026-27.
- Broadband: Gigabit broadband is available to 100% of premises.
- Transport: The nearest railway station is Hackbridge, about 270 m away in a straight line.
- Green space: There is a small park or garden about 40 m away, and Beddington Park (59 hectares) is about 430 m (0.3 miles) away.
- Air: Background air pollution in 2024 was 14.1 µg/m³ of nitrogen dioxide and 8.3 of PM2.5, within UK legal limits.
- Height: Its addresses are 27 to 28 m above sea level.
- Noise: 9 of its 37 addresses are modelled at 55 dB or more from road traffic.
- Doctors: The nearest GP surgery is Hackbridge Medical Centre, about 110 m away, with 5 practices within 1.6 km (1 mile).
- People: About 610 people lived in the census areas around it in 2021; 89% of households owned their home and 71% of adults held a degree or other higher qualification.
- Crime: 125 crimes were recorded within 250 m between September 2025 and August 2026, most often violence and sexual offences.
Sales on this street
| Year | Sales | Median price | Lowest | Highest |
|---|---|---|---|---|
| 2026 | 1 | £280,000 | £280,000 | £280,000 |
| 2025 | 1 | £375,000 | £375,000 | £375,000 |
| 2024 | 1 | £650,000 | £650,000 | £650,000 |
| 2023 | 3 | £325,000 | £265,000 | £598,000 |
| 2022 | 3 | £287,500 | £265,000 | £702,000 |
| 2021 | 1 | £265,000 | £265,000 | £265,000 |
| 2019 | 15 | £549,995 | £293,995 | £599,995 |
| 2018 | 18 | £293,995 | £282,995 | £360,000 |
| Date | Address | Type | Price | Notes |
|---|---|---|---|---|
| 3 Jul 2026 | FLAT 17, WIGAN COURT, 11 SM6 7FD | Flat or maisonette | £280,000 | Leasehold. |
| 10 Oct 2025 | FLAT 2, WIGAN COURT, 11 SM6 7FD | Flat or maisonette | £375,000 | Leasehold. |
| 1 Mar 2024 | 14 SM6 7FB | Terraced | £650,000 | |
| 18 Dec 2023 | 16 SM6 7FB | Flat or maisonette | £265,000 | Leasehold. |
| 8 Sep 2023 | FLAT 15, WIGAN COURT, 11 SM6 7FD | Flat or maisonette | £325,000 | Leasehold. |
| 26 Aug 2023 | 2 SM6 7FB | Terraced | £598,000 | |
| 22 Dec 2022 | 12 SM6 7FB | Terraced | £702,000 | |
| 9 Dec 2022 | FLAT 5, WIGAN COURT, 11 SM6 7FD | Flat or maisonette | £287,500 | Leasehold. |
| 13 Apr 2022 | FLAT 14, WIGAN COURT, 11 SM6 7FD | Flat or maisonette | £265,000 | Leasehold. |
| 26 Feb 2021 | FLAT 6, WIGAN COURT, 11 SM6 7FD | Flat or maisonette | £265,000 | Leasehold. |
| 28 Jun 2019 | 7 SM6 7FD | Terraced | £549,995 | New build. |
| 27 Jun 2019 | 3 SM6 7FD | Terraced | £599,995 | New build. |
| 27 Jun 2019 | 5 SM6 7FD | Terraced | £599,995 | New build. |
| 27 Jun 2019 | 1 SM6 7FD | Terraced | £554,995 | New build. |
| 27 Jun 2019 | 9 SM6 7FD | Terraced | £549,995 | New build. |
| 10 May 2019 | 10 SM6 7FB | Terraced | £599,995 | New build. |
| 1 May 2019 | 4 SM6 7FB | Terraced | £549,995 | New build. |
| 26 Apr 2019 | 8 SM6 7FB | Terraced | £549,995 | New build. |
| 25 Apr 2019 | 2 SM6 7FB | Terraced | £554,995 | New build. |
| 18 Apr 2019 | 12 SM6 7FB | Terraced | £599,995 | New build. |
| 11 Apr 2019 | 6 SM6 7FB | Terraced | £549,995 | New build. |
| 29 Mar 2019 | 14 SM6 7FB | Terraced | £599,995 | New build. |
| 28 Mar 2019 | FLAT 16, WIGAN COURT, 11 SM6 7FD | Flat or maisonette | £297,995 | New build. Leasehold. |
| 17 Jan 2019 | FLAT 20, WIGAN COURT, 11 SM6 7FD | Flat or maisonette | £293,995 | New build. Leasehold. |
| 16 Jan 2019 | FLAT 19, WIGAN COURT, 11 SM6 7FD | Flat or maisonette | £303,995 | New build. Leasehold. |
| 21 Dec 2018 | FLAT 2, WIGAN COURT, 11 SM6 7FD | Flat or maisonette | £360,000 | New build. Leasehold. |
| 21 Dec 2018 | FLAT 10, WIGAN COURT, 11 SM6 7FD | Flat or maisonette | £355,995 | New build. Leasehold. |
| 21 Dec 2018 | FLAT 1, WIGAN COURT, 11 SM6 7FD | Flat or maisonette | £354,995 | New build. Leasehold. |
| 21 Dec 2018 | FLAT 4, WIGAN COURT, 11 SM6 7FD | Flat or maisonette | £352,995 | New build. Leasehold. |
| 21 Dec 2018 | FLAT 9, WIGAN COURT, 11 SM6 7FD | Flat or maisonette | £352,995 | New build. Leasehold. |
| 21 Dec 2018 | FLAT 3, WIGAN COURT, 11 SM6 7FD | Flat or maisonette | £349,995 | New build. Leasehold. |
| 21 Dec 2018 | FLAT 21, WIGAN COURT, 11 SM6 7FD | Flat or maisonette | £297,995 | New build. Leasehold. |
| 21 Dec 2018 | FLAT 17, WIGAN COURT, 11 SM6 7FD | Flat or maisonette | £293,995 | New build. Leasehold. |
| 21 Dec 2018 | FLAT 18, WIGAN COURT, 11 SM6 7FD | Flat or maisonette | £293,995 | New build. Leasehold. |
| 21 Dec 2018 | FLAT 13, WIGAN COURT, 11 SM6 7FD | Flat or maisonette | £292,995 | New build. Leasehold. |
| 21 Dec 2018 | FLAT 12, WIGAN COURT, 11 SM6 7FD | Flat or maisonette | £290,995 | New build. Leasehold. |
| 21 Dec 2018 | FLAT 14, WIGAN COURT, 11 SM6 7FD | Flat or maisonette | £290,995 | New build. Leasehold. |
| 21 Dec 2018 | FLAT 7, WIGAN COURT, 11 SM6 7FD | Flat or maisonette | £287,995 | New build. Leasehold. |
| 21 Dec 2018 | FLAT 6, WIGAN COURT, 11 SM6 7FD | Flat or maisonette | £282,995 | New build. Leasehold. |
| 21 Dec 2018 | FLAT 5, WIGAN COURT, 11 SM6 7FD | Flat or maisonette | £282,995 | New build. Leasehold. |
| 20 Dec 2018 | FLAT 15, WIGAN COURT, 11 SM6 7FD | Flat or maisonette | £345,995 | New build. Leasehold. |
| 20 Dec 2018 | FLAT 11, WIGAN COURT, 11 SM6 7FD | Flat or maisonette | £290,995 | New build. Leasehold. |
| 20 Dec 2018 | FLAT 8, WIGAN COURT, 11 SM6 7FD | Flat or maisonette | £287,995 | New build. Leasehold. |
Energy performance certificates
34 homes with a current certificate; median floor area 64 m². Most common: Flat (22); House, mid-terrace (7); House, end-terrace (5). Built: 2017 (33); 2018 (1).
Each home's certificates and sales (34 addresses)
- 1, Thread Street
- 2, Thread Street
- 3, Thread Street
- 4, Thread Street
- 5, Thread Street
- 6, Thread Street
- 7, Thread Street
- 8, Thread Street
- 9, Thread Street
- 10, Thread Street
- 12, Thread Street
- 14, Thread Street
- 16, Thread Street
- Flat 1 Wigan Court, 11, Thread Street
- Flat 2 Wigan Court, 11, Thread Street
- Flat 3 Wigan Court, 11, Thread Street
- Flat 4 Wigan Court, 11, Thread Street
- Flat 5 Wigan Court, 11, Thread Street
- Flat 6 Wigan Court, 11, Thread Street
- Flat 7 Wigan Court, 11, Thread Street
- Flat 8 Wigan Court, 11, Thread Street
- Flat 9 Wigan Court, 11, Thread Street
- Flat 10 Wigan Court, 11, Thread Street
- Flat 11 Wigan Court, 11, Thread Street
- Flat 12 Wigan Court, 11, Thread Street
- Flat 13 Wigan Court, 11, Thread Street
- Flat 14 Wigan Court, 11, Thread Street
- Flat 15 Wigan Court, 11, Thread Street
- Flat 16 Wigan Court, 11, Thread Street
- Flat 17 Wigan Court, 11, Thread Street
- Flat 18 Wigan Court, 11, Thread Street
- Flat 19 Wigan Court, 11, Thread Street
- Flat 20 Wigan Court, 11, Thread Street
- Flat 21 Wigan Court, 11, Thread Street
Council tax
What each band costs in Sutton in 2026-27: Band D £2,379 a year on average, including the police, fire and any county and parish charges.
| A | B | C | D | E | F | G | H |
|---|---|---|---|---|---|---|---|
| £1,586 | £1,850 | £2,114 | £2,379 | £2,907 | £3,436 | £3,964 | £4,757 |
Homes by band in the neighbourhood around this street: most are in band D (41% of about 1,090 homes).
Planning and heritage
- Conservation area: no postcode centre in this street's postcodes is in one.
- Listed buildings on or by this street: none.
- Article 4 direction (removing permitted development rights): none recorded, though not every council has published theirs.
- Tree preservation orders: none recorded, though not every council has published theirs.
- Green belt: no.
Brownfield land registered for housing within 1 km (0.6 miles)
- Former Felnex Trading Estate, 190 London Road, Hackbridge. SM6 7EL, permissioned (50 m)
- 1-72 Corbet Close, Hackbridge. SM6 7AP, permissioned (240 m)
- 1-16 Nightingale Close, Carshalton. SM5 2DD, permissioned (240 m)
- 1-16 Nightingale Close, Carshalton. SM5 2DD, permissioned (240 m)
- Hackbridge Station: up to 41 homes, not permissioned (260 m)
- Hackbridge Station: up to 44 homes, not permissioned (260 m)
- Land Adjoining Hackbridge Station: up to 172 homes, not permissioned (310 m)
- Land Adjoining Hackbridge Station: up to 174 homes, not permissioned (310 m)
Roadworks
No street works under way, planned or finished in the last three months on this street, in permits up to 31 October 2026.
Flood risk
Rivers, the sea or surface water: in this street's postcodes, 1 address is in areas at high risk, 21 at medium risk and 3 at low risk. Each address counts once, at the higher of its rivers-and-sea and surface-water risk.
Rivers and the sea alone: no home is in an area at risk.
High: 3.3% (1 in 30) or more chance of flooding a year. Medium: 1% to 3.3%. Low: 0.1% to 1%. Very low: under 0.1%. The rivers and sea figures allow for flood defences. Counts cover whole postcodes, which can include other streets.
Flood zone for planning: no postcode centre on this street is in flood zone 2 or 3.
| Postcode | Planning zone | Addresses at high / medium / low risk | Groundwater |
|---|---|---|---|
| SM6 7FD | not in 2 or 3 | 0 / 0 / 0 | unlikely |
| SM6 7FB | not in 2 or 3 | 0 / 0 / 0 | unlikely |
| SM6 7DP | not in 2 or 3 | 1 / 21 / 3 | unlikely |
Height above sea level
The street's 37 addresses are between 27 m and 28 m above sea level (27 m on average).
Broadband
| Postcode | Superfast (30 Mbit/s+) | Ultrafast (300 Mbit/s+) | Gigabit | Below 10 Mbit/s |
|---|---|---|---|---|
| SM6 7DP | 100% | 100% | 100% | 0% |
| SM6 7FB | 100% | 100% | 100% | 0% |
| SM6 7FD | 100% | 100% | 100% | 0% |
Getting around
| Nearest | Distance | |
|---|---|---|
| Railway stations | Hackbridge 911,000 journeys in 2024–25 | 270 m |
| Carshalton 1.1 million journeys in 2024–25 | 1.1 km (0.7 miles) | |
| Mitcham Junction 408,000 journeys in 2024–25 | 1.8 km (1.1 miles) | |
| Underground, metro or tram | Beddington Lane Tram Stop | 1.7 km (1.1 miles) |
| Mitcham Junction Tram Stop | 1.8 km (1.1 miles) | |
| Bus stops | 6 stops within 400 m (0.2 miles), 23 within 800 m (0.5 miles); nearest Corbet Close Hackbridge | 120 m |
| Bus or coach station | Banstead - Fir Tree Road | 6.6 km (4.1 miles) |
| Ferry terminal | Wandsworth Riverside Quarter Pier | 10 km (6.2 miles) |
| Car parks | Apcoa | 1.1 km (0.7 miles) |
| EV charging points | 25 within 1.6 km (1 mile); nearest bp pulse Charging Station | 290 m |
| Airport with scheduled flights | London City Airport LCY | 20.6 km (13 miles) |
| Nearest large airport | London Heathrow Airport LHR | 23.5 km (15 miles) |
Local services
| Nearest | Distance | |
|---|---|---|
| GP surgeries | 5 practices within 1.6 km (1 mile); nearest Hackbridge Medical Centre | 110 m |
| Pharmacies | 6 pharmacies within 1.6 km (1 mile); nearest Anna Pharmacy Hackbridge | 190 m |
| NHS dentists | 4 practices within 1.6 km (1 mile); nearest Sutton Dental Care | 190 m |
| Hospital | St Helier Hospital | 1.9 km (1.2 miles) |
| Police station | Sutton Police Station | 2.9 km (1.8 miles) |
| Cash machines | ATM | 870 m (0.5 miles) |
Parks and green space
| Nearest | Distance | |
|---|---|---|
| Park or garden | 6 within 800 m (0.5 miles); nearest Unnamed 4,070 m² | 40 m |
| Largest park within 800 m (0.5 miles) | Beddington Park 59 ha | 430 m (0.3 miles) |
| Play area | 9 within 800 m (0.5 miles); nearest Unnamed 890 m² | 50 m |
| Playing field | 1 within 800 m (0.5 miles); nearest Dale Park Avenue Recreation Ground 1.4 ha | 460 m (0.3 miles) |
| Allotments | 4 within 800 m (0.5 miles); nearest Culvers Avenue Allotments 3,790 m² | 320 m |
Within 800 m (0.5 miles): 6 parks and gardens, 65 hectares in all.
Landmarks
The nearest historic landmark is Dovecote, Beddington Park, a scheduled monument, 1.3 km (0.8 miles) east. 15 listed buildings are within 1 km (0.6 miles).
| Name | What it is | From the middle of the street |
|---|---|---|
| Dovecote, Beddington Park | Scheduled monument | 1.3 km (0.8 miles) east |
| Roman villa E of Beddington Park | Scheduled monument | 1.4 km (0.9 miles) east |
| Carshalton House (St Philomena's School) | Registered park or garden, Grade II | 1.6 km (1 mile) south-west |
| Name | What it is | From the middle of the street |
|---|---|---|
| Wilderness Island | Wood | 370 m south |
| River Wandle (Carshalton Branch) | Lake or reservoir | 910 m (0.6 miles) south |
| Elm Grove | Wood | 910 m (0.6 miles) south |
| St Alban's Grove | Wood | 1.2 km (0.7 miles) north-west |
| Selby Green | Wood | 1.4 km (0.9 miles) north-west |
| Duppas Hill | Hill | 3.4 km (2.1 miles) east |
Air quality
| Pollutant | Here | UK limit | WHO guideline |
|---|---|---|---|
| Nitrogen dioxide (NO2) | 14.1 | 40 | 10 |
| Fine particles (PM2.5) | 8.3 | 20 | 5 |
| Particles (PM10) | 12.8 | 40 | 15 |
All three are within the UK legal limits; nitrogen dioxide and PM2.5 are above the WHO guideline, as in most towns and cities.
Road, rail and aircraft noise
| Level | Road traffic | Railways | Aircraft |
|---|---|---|---|
| 55 to 59 | 9 | 0 | 0 |
| Under 55 | 28 | 37 | 37 |
9 of the street's 37 addresses are modelled at 55 dB or more from road traffic, above the WHO guidelines.
Climate, daylight and earthquakes
Monthly temperatures and rainfall, sunrise and sunset through the year, and earthquakes recorded nearby since 1970 are much the same across the area, so they are worked out once for Sutton: see them on the Sutton page.
Nearest schools
| School | Phase | Ages | Distance | Inspection |
|---|---|---|---|---|
| Hackbridge Primary School | Primary | 3–11 | 160 m | No published inspection |
| Culvers House Primary School | Primary | 3–11 | 490 m (0.3 miles) | Good (May 2023, overall grade under the previous framework) |
| Spencer Nursery School | Nursery | 3–5 | 830 m (0.5 miles) | No published inspection |
| Victor Seymour Infants' School | Primary | 3–7 | 1 km (0.6 miles) | Outstanding (Sep 2019, overall grade under the previous framework) |
| Muschamp Primary School and Language Opportunity Base | Primary | 3–11 | 1 km (0.6 miles) | Report card (Feb 2026): Curriculum and teaching: Expected standard; Achievement: Expected standard; Attendance and behaviour: Expected standard; Personal development and wellbeing: Expected standard; Inclusion: Expected standard; Leadership and governance: Expected standard; Early years: Expected standard; Safeguarding standards: Met |
| Harris Junior Academy Carshalton | Primary | 7–11 | 1 km (0.7 miles) | No overall grade (Nov 2024, graded inspection without an overall judgement): Quality of education: Outstanding; Behaviour and attitudes: Outstanding; Personal development: Outstanding; Leadership and management: Outstanding |
| Wallington County Grammar School | Secondary | 11–18 | 1.1 km (0.7 miles) | No published inspection |
| Rushy Meadow Primary Academy | Primary | 3–11 | 1.1 km (0.7 miles) | Good (Dec 2019, overall grade under the previous framework) |
| Carshalton High School for Girls | Secondary | 11–18 | 1.2 km (0.7 miles) | No published inspection |
| Carshalton Boys Sports College | Secondary | 11–19 | 1.2 km (0.8 miles) | Good (Oct 2022, overall grade under the previous framework) |
| Beddington Infants' School | Primary | 2–7 | 1.3 km (0.8 miles) | Good (Jul 2023, overall grade under the previous framework) |
| Holy Trinity CofE Junior School Church of England | Primary | 7–11 | 1.3 km (0.8 miles) | No published inspection |
Food hygiene ratings nearby
| Business | Type | Distance | Rating | Rated |
|---|---|---|---|---|
| The Coffee Bloom | Mobile caterer | 120 m | 5 Very good | 9 May 2024 |
| Hackbridge Primary School - Breakfast Club SM6 7AS | School/college/university | 160 m | 5 Very good | 26 Sep 2023 |
| HCL@Hackbridge Primary School SM6 7AS | School/college/university | 160 m | 5 Very good | 22 Oct 2025 |
| Harriers After School Club SM6 7AX | Hospitals/Childcare/Caring Premises | 160 m | 5 Very good | 3 Mar 2026 |
| The Red Lion SM6 7AX | Pub/bar/nightclub | 160 m | 5 Very good | 26 Mar 2026 |
| Slate & Grain Brasserie & Bar - Coffee Lounge SM6 7GD | Restaurant/Cafe/Canteen | 180 m | 5 Very good | 17 Nov 2023 |
| Rishis Catering Ltd T/A Slate & Grain Brasserie & Bar SM6 7GD | Takeaway/sandwich shop | 180 m | 5 Very good | 20 Jun 2025 |
| Lidl SM6 7DS | Retailers - supermarkets/hypermarkets | 180 m | 5 Very good | 1 May 2024 |
| Good Guru Limited SM6 7AH | Retailers - other | 220 m | 3 Generally satisfactory | 11 Dec 2024 |
| 3B Convenience Store SM6 7FW | Retailers - other | 230 m | 5 Very good | 18 Nov 2025 |
| Sainsbury's SM6 7AN | Retailers - supermarkets/hypermarkets | 250 m | 5 Very good | 4 Jun 2024 |
| Hackbridge Cafe Limited SM6 7HW | Restaurant/Cafe/Canteen | 270 m | 3 Generally satisfactory | 31 Mar 2026 |
| Asia Tandoori Restaurant SM6 7HW | Other catering premises | 270 m | 3 Generally satisfactory | 11 Mar 2025 |
| Hackbridge Newsagents SM6 7HW | Retailers - other | 270 m | 4 Good | 14 Jan 2025 |
| Today's Local SM6 7HF | Retailers - other | 310 m | 3 Generally satisfactory | 12 Mar 2025 |
Crime within 250 m
| Category | Crimes |
|---|---|
| Violence and sexual offences | 47 |
| Anti-social behaviour | 21 |
| Vehicle crime | 13 |
| Other theft | 9 |
| Public order | 6 |
| Burglary | 6 |
| Criminal damage and arson | 5 |
| Shoplifting | 5 |
| Drugs | 4 |
| Bicycle theft | 2 |
| Other crime | 2 |
| Robbery | 2 |
| Theft from the person | 2 |
| Possession of weapons | 1 |
Most of these are attached to: On or near Silk Road (25); On or near London Road (19); On or near Corbet Close (13); On or near Merino Close (11); On or near Hackbridge Road (9).
People and work
Who lives here
| Around this street | England | |
|---|---|---|
| Median age | 32 | 40 |
| Children under 15 | 18% | 17% |
| Aged 65 and over | under 1% | 18% |
Homes
| Around this street | England | |
|---|---|---|
| Owned (outright or with a mortgage) | 89% | 61% |
| Owned outright | 1% | 33% |
| Shared ownership | 2% | 1% |
| Social rented | 2% | 17% |
| Private rented | 7% | 21% |
Work and commuting
| Around this street | England | |
|---|---|---|
| Adults (16 and over) in work | 88% | 57% |
| Unemployment (of those working or looking for work) | 3% | 6% |
| Retired (of adults) | 1% | 22% |
| Long-term sick or disabled (of adults) | under 1% | 4% |
| Work mainly from home (of those in work) | 53% | 32% |
| Travel to work by car or van | 19% | 48% |
| By train, Underground, metro or tram | 19% | 4% |
| By any public transport, including bus | 23% | 8% |
| On foot or by bicycle | 4% | 10% |
| Work within 10 km (6 miles) of home (of those who travel to work) | 48% | 65% |
| Work 30 km (19 miles) or more away | 2% | 8% |
Education and languages
| Around this street | England | |
|---|---|---|
| Degree or other higher qualification, Level 4+ (of adults) | 71% | 34% |
| No qualifications | 4% | 18% |
| Apprenticeship as highest qualification | 1% | 5% |
| Main language English (aged 3 and over) | 73% | 91% |
| Cannot speak English well or at all | 3% | 2% |
Deprivation
The neighbourhood around this street is in decile 8 of 10 on the English Indices of Deprivation 2025, where 1 is the most deprived tenth of England's 33,755 neighbourhoods and 10 the least.
What has changed
Nothing new since the change feed started on 30 October 2026. New sales and energy certificates, and hygiene ratings, school inspections and flood figures nearby, will be listed here as the sources update.
Postcodes on this street
Nearby streets
Cotton Way · Merino Close · Silk Road · Twill Way · Angora Close · Bobbin Close · Restmor Way · Thimble Crescent · Felnex Avenue · Rayon Close · The Green · Spinning Wheel Way
What this page cannot tell you
- Whether a particular house is at risk of flooding, subsiding or anything else: the flood map is a model of areas and there is no property-level data here.
- What a home is worth now: sales are historic prices for the homes that happened to sell.
- How safe the street is: crime points are moved to anonymised locations and many crimes are never reported.
- Whether you would get a place at a school: distances are straight lines, not catchments.
- Who lives on the street now: census figures describe the small areas around it in March 2021, during a lockdown.
- How long a journey takes or how often anything runs: transport distances are straight lines to the nearest stops.
- Whether a GP practice is taking new patients, or a dentist new NHS patients.
- How loud a home is inside, or noise from industry, neighbours or smaller airfields: noise figures are models of road, rail and air traffic outside.
How each figure on this page is matched to the street and worked out: methodology.