Ashdown Way Colchester

24 addresses across 4 postcodes (CO4), about 170 m long, classed as a local road. USRN 8900079.

  • Sales: 30 recorded sales since 1995; in 2020 the median was £245,000 across 1 sale.
  • Energy: 17 homes have an energy certificate (A: 1, C: 7, D: 7, E: 2).
  • Flood: No address on its postcodes is in an area 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 A; Band D in Colchester costs £2,283 a year in 2026-27.
  • Broadband: Gigabit broadband is available to 100% of premises.
  • Transport: The nearest railway station is Hythe (Essex), about 470 m (0.3 miles) away in a straight line.
  • Green space: The nearest park or garden is about 260 m away.
  • Air: Background air pollution in 2024 was 9.7 µg/m³ of nitrogen dioxide and 7.3 of PM2.5, within UK legal limits.
  • Height: Its addresses are 21 to 29 m above sea level.
  • Noise: 1 of its 24 addresses is modelled at 55 dB or more from road traffic.
  • Doctors: The nearest GP surgery is Colchester Medical Practice, about 1.5 km (0.9 miles) away, with 2 practices within 1.6 km (1 mile).
  • People: About 690 people lived in the census areas around it in 2021; 28% of households owned their home and 17% of adults held a degree or other higher qualification.
  • Crime: 200 crimes were recorded within 250 m between September 2025 and August 2026, most often violence and sexual offences.

Sales on this street

Source: HM Land Registry Price Paid Data, sales registered up to 28 August 2026, loaded 28 October 2026. Sales reach the register two weeks to two months after completion, so the last two months are incomplete. Matched by postcode and street name.

Sales by year (standard sales only; repossessions and buy-to-let transfers excluded)
YearSalesMedian priceLowestHighest
20201£245,000£245,000£245,000
20193£215,000£160,000£225,000
20171£220,000£220,000£220,000
20161£122,000£122,000£122,000
20151£165,000£165,000£165,000
20111£151,000£151,000£151,000
20103£152,000£148,500£152,000
20092£113,750£97,000£130,500
20082£149,500£146,000£153,000
20072£168,000£151,000£185,000
20061£130,000£130,000£130,000
20051£90,000£90,000£90,000
Most recent sales (30)
DateAddressTypePriceNotes
21 Oct 20225 CO4 3QUTerraced£280,000Not a standard sale (repossession, buy-to-let or transfer).
27 Mar 20202 CO4 3QUTerraced£245,000
23 Aug 20198 CO4 3QUTerraced£225,000
8 May 201910 CO4 3QUTerraced£215,000
8 Mar 201912 CO4 3QUTerraced£195,000Not a standard sale (repossession, buy-to-let or transfer).
30 Jan 20198 CO4 3QUTerraced£160,000
12 Sep 201713 CO4 3QZSemi-detached£200,000Not a standard sale (repossession, buy-to-let or transfer).
31 May 20171 CO4 3QUTerraced£220,000
26 Feb 201624 CO4 3QZFlat or maisonette£122,000Leasehold.
18 Aug 201510 CO4 3QUTerraced£165,000
10 Jun 20119 CO4 3QUSemi-detached£151,000
3 Nov 20102 CO4 3QUTerraced£152,000
11 Jun 201020 CO4 3QZSemi-detached£152,000
22 Mar 20106 CO4 3QUTerraced£148,500
11 Sep 200919 CO4 3QZTerraced£130,500
10 Mar 200917 CO4 3QZTerraced£97,000
20 Oct 20081 CO4 3QUTerraced£146,000
11 Jan 20086 CO4 3QUTerraced£153,000
28 Sep 20072 CO4 3QUTerraced£151,000
30 Aug 200720 CO4 3QZSemi-detached£185,000
18 Aug 200610 CO4 3QUTerraced£130,000
24 Feb 200524 CO4 3QZFlat or maisonette£90,000Leasehold.
12 Mar 200410 CO4 3QUTerraced£124,000
4 Sep 20022 CO4 3QUTerraced£120,000
16 Dec 199816 CO4 3QZTerraced£54,000
21 Aug 19985 CO4 3QUTerraced£54,000
17 Dec 19977 CO4 3QUTerraced£34,995
3 Oct 19973 CO4 3QUTerraced£47,000
31 Jul 19962 CO4 3QUTerraced£43,000
3 Jul 199518 CO4 3QZTerraced£49,995

Energy performance certificates

Source: Energy Performance of Buildings Register (MHCLG), register as at 1 November 2026. Latest certificate per address; certificates last ten years, so the oldest here dates from January 2009 and some homes have none. Address data © Ordnance Survey and Royal Mail, shown for understanding the energy efficiency of buildings only.

17 homes with a current certificate; median floor area 89 m². Most common: House, mid-terrace (7); House, end-terrace (5); House, semi-detached (3). Built: 1967-1975 (11); 1950-1966 (5); 1983-1990 (1). Tenure at assessment: owner-occupied (6); rented (private) (4); rented (social) (2).

Each home's certificates and sales (15 addresses)

Council tax

What each band costs in Colchester in 2026-27: Band D £2,283 a year on average, including the police, fire and any county and parish charges.

ABCDEFGH
£1,522£1,776£2,029£2,283£2,790£3,297£3,805£4,566

Homes by band in the neighbourhood around this street: most are in band A (58% of about 660 homes).

Sources: Valuation Office Agency, Council Tax: stock of properties, homes at 31 March 2026 (counts rounded to the nearest 10; some small counts withheld), for the neighbourhood (census area of about 700 homes) around it, not just this street; Ministry of Housing, Communities and Local Government, council tax levels 2026-27. Bands are charged as fixed shares of Band D; the actual bill depends on the parish and on discounts such as the single-person discount. Check a home's own band with the official council tax band checker.

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)

Source: planning.data.gov.uk (Ministry of Housing, Communities and Local Government), compiled from councils and, for listed buildings, Historic England's National Heritage List. Conservation areas, Article 4 directions, tree preservation areas and the green belt are checked at each postcode's centre. Listed buildings and protected trees are counted on or by this street. Councils publish Article 4 directions, tree preservation orders and brownfield registers to different standards, and some not yet. Planning applications are not here: there is no national open record of them yet.

Roadworks

No street works under way, planned or finished in the last three months on this street, in permits up to 31 October 2026.

Source: Department for Transport, Street Manager open data, permits and works up to 31 October 2026. It is published once a month, so works arranged or started since then are not shown, and dates are the ones planned unless the works have started or finished. Emergency works are often permitted after they begin.

Flood risk

Rivers, the sea or surface water: in this street's postcodes, 0 addresses are in areas at high risk, 0 at medium risk and 4 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.

PostcodePlanning zoneAddresses at high / medium / low riskGroundwater
CO4 3QUnot in 2 or 3 0 / 0 / 0 unlikely
CO4 3QZnot in 2 or 3 0 / 0 / 2 unlikely
CO4 3QNnot in 2 or 3 0 / 0 / 0 unlikely
CO4 3RAnot in 2 or 3 0 / 0 / 2 unlikely

Sources: Environment Agency Flood risk: postcode search tool data (loaded 29 October 2026), Risk of Flooding from Rivers and Sea: postcodes in areas at risk (loaded 29 October 2026) and Flood Map for Planning (loaded 28 October 2026). Flood zones are checked at each postcode's centre point. These are models of areas, which their publishers say are not suitable for showing whether an individual property is at risk, and they do not cover flooding from sewers or drains. Check an address on the official long-term flood risk service.

© Environment Agency copyright and/or database right 2026. All rights reserved. Some features are based on digital spatial data from the Centre for Ecology & Hydrology, © NERC (CEH); the postcode data is produced in part from PAF® and Multiple Residence Data, © Royal Mail Group Limited.

Height above sea level

The street's 24 addresses are between 21 m and 29 m above sea level (25 m on average); the ground rises about 8 m from the lowest to the highest.

Source: Ordnance Survey, OS Terrain 50, July 2026: the height of the ground on a 50 m grid, read at each address, in metres above Ordnance Datum (mean sea level at Newlyn). It is the lie of the land, not floor or threshold levels, and is accurate to a few metres. Being low-lying is not in itself a flood risk; the flood section above says what the flood maps show.

Broadband

Source: Ofcom Connected Nations, data as at January 2026. Percentages are of premises in each postcode that can get the service, not take-up or speed achieved.

Availability by postcode (% of premises)
PostcodeSuperfast (30 Mbit/s+)Ultrafast (300 Mbit/s+)GigabitBelow 10 Mbit/s
CO4 3QN100%100%100%0%
CO4 3QU100%100%100%0%
CO4 3QZ100%100%100%0%
CO4 3RA100%100%100%0%

Getting around

Sources: Department for Transport, NaPTAN (every public transport stop), as at 31 October 2026; Office of Rail and Road, Estimates of station usage 2024–25 (which stations are on the National Rail network, and their journeys: entries and exits in the year to March); OurAirports (public domain, kept by volunteers); car parks and charging points from Overture Maps Foundation, release 2026-10-21.0, which gathers business listings from Meta, Microsoft, Foursquare and others: not an official register, so some will be missing, private or out of date. Distances are straight lines from the middle of the street, not routes, and say nothing about how often anything runs. Stations opened since the end of ORR's year appear when ORR publishes the next one, each December; heritage railways are left out.

NearestDistance
Railway stationsHythe (Essex) 433,000 journeys in 2024–25470 m (0.3 miles)
Colchester Town 1.0 million journeys in 2024–251.9 km (1.2 miles)
Colchester 3.6 million journeys in 2024–253 km (1.8 miles)
Bus stops19 stops within 400 m (0.2 miles), 60 within 800 m (0.5 miles); nearest Howe Close Greenstead110 m
Bus or coach stationColchester North Park-and-Ride Mile End4.8 km (3 miles)
Ferry terminalEast Mersea Ferry Landing11.2 km (7 miles)
Car parksPriory Street Car Park1.7 km (1.1 miles)
EV charging pointsRoam Charging Station2.1 km (1.3 miles)
Airport with scheduled flightsLondon Southend Airport SEN39.1 km (24 miles)
Nearest large airportLondon Stansted Airport STN48 km (30 miles)

Local services

Sources: NHS Organisation Data Service, as at 31 October 2026: GP practices, community pharmacies and dental practices with an NHS contract, open now, each placed at the centre of its postcode; hospitals are NHS trust and Welsh health board sites named as hospitals, and may not have an emergency department. Police stations and cash machines from Overture Maps Foundation, release 2026-10-21.0, which gathers business listings: not an official register, so some will be missing or out of date. Distances are straight lines from the middle of the street. Nothing here says whether a practice is taking new patients or a dentist new NHS patients.

NearestDistance
GP surgeries2 practices within 1.6 km (1 mile); nearest Colchester Medical Practice1.5 km (0.9 miles)
Pharmacies7 pharmacies within 1.6 km (1 mile); nearest Boots440 m (0.3 miles)
NHS dentists3 practices within 1.6 km (1 mile); nearest Bromley Road Dental Surgery1 km (0.6 miles)
HospitalOaks Hospital3.2 km (2 miles)
Police stationEssex Police1.9 km (1.2 miles)
Cash machines1 machines within 800 m (0.5 miles); nearest Waitrose Colchester210 m

Parks and green space

Source: Ordnance Survey, OS Open Greenspace, April 2026: public parks and gardens, play spaces, playing fields and allotments, with their entrances. Distances are straight lines from the middle of the street to a site's nearest entrance (or its edge where none is recorded), not walking routes; sizes are the area OS maps for each site. Some sites, such as school playing fields, may not be open to the public.

NearestDistance
Park or garden3 within 800 m (0.5 miles); nearest Unnamed 9.8 ha260 m
Play area8 within 800 m (0.5 miles); nearest Unnamed 660 m²220 m
Playing field3 within 800 m (0.5 miles); nearest Unnamed 1.3 ha220 m
Allotments2 within 800 m (0.5 miles); nearest Unnamed 2.2 ha680 m (0.4 miles)

Within 800 m (0.5 miles): 3 parks and gardens, 18 hectares in all.

Landmarks

The nearest historic landmark is Former Church of St Leonard at the Hythe, a listed building (Grade II*), 740 m (0.5 miles) south-west. 30 listed buildings are within 1 km (0.6 miles), 1 of them Grade II*.

Historic places
NameWhat it isFrom the middle of the street
Former Church of St Leonard at the HytheListed building, Grade II*740 m (0.5 miles) south-west
Group of barrows at Annan RoadScheduled monument1.1 km (0.7 miles) south
SE corner of Roman town in Easthill House GardensScheduled monument1.7 km (1.1 miles) west
Town ditchScheduled monument1.8 km (1.1 miles) west
Wivenhoe ParkRegistered park or garden, Grade II1.9 km (1.2 miles) south-east
Colchester Castle ParkRegistered park or garden, Grade II2 km (1.2 miles) west
Natural landmarks within 5 km (3.1 miles)
NameWhat it isFrom the middle of the street
Ash PlantationWood380 m north
Clingoe Hill WoodWood1.2 km (0.8 miles) south-east
Home WoodWood1.3 km (0.8 miles) east
Distillery PondLake or reservoir1.4 km (0.9 miles) south
Hythe MarshesWetland2.7 km (1.7 miles) south
John de Bois HillHill3.1 km (1.9 miles) north-east

Sources: Historic England's registers through planning.data.gov.uk (MHCLG), and Cadw through DataMapWales (Welsh Government): World Heritage Sites within 10 km (6.2 miles), battlefields within 5 km (3.1 miles), registered parks and gardens within 3 km (1.9 miles), scheduled monuments within 2 km (1.2 miles), and Grade I and II* listed buildings within 1 km (0.6 miles). Ordnance Survey, OS Open Names, October 2026: named hills, valleys, lakes, woods, wetlands and coast (it has no rivers). Distances are in a straight line to the middle of each site, and being on a register does not mean there is public access.

Air quality

Source: Defra, modelled background air pollution, annual means for 2024, for the 1 km square that holds the middle of the street. These are background levels, away from the kerb: beside a busy road nitrogen dioxide in particular can be several times higher. UK limits are the legal annual limits for England and Wales; the World Health Organization's 2021 guidelines are much stricter, and most towns and cities are above them.

Annual means in µg/m³ (micrograms per cubic metre of air)
PollutantHereUK limitWHO guideline
Nitrogen dioxide (NO2)9.74010
Fine particles (PM2.5)7.3205
Particles (PM10)11.74015

All three are within the UK legal limits; PM2.5 is above the WHO guideline, as in most towns and cities.

Road and rail noise

Source: Defra, strategic noise mapping Round 4 (England), modelled for 2021 and published in December 2023, and its airport maps of the same round for the fifteen largest English airports, published in April 2026: Lden, the average sound level over a whole day with extra weight for the evening and night, on a 10 m grid, read at each address. These are models of traffic, not measurements; they leave out smaller airports and airfields, industry and neighbours, and a room at the back of a house is often much quieter than the front. The World Health Organization's guidelines are 53 dB for road traffic, 54 dB for railways and 45 dB for aircraft (below the lowest level shown here).

Addresses by modelled noise level (Lden, dB)
LevelRoad trafficRailways
55 to 5910
Under 552324

1 of the street's 24 addresses is 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 Colchester: see them on the Colchester page.

Nearest schools

Source: Get Information About Schools (Department for Education), 3 November 2026; Ofsted monthly management information as at September 2026. Distances are straight lines from the middle of the street to the school; catchments and admissions are not shown. Since November 2025 Ofsted gives report-card grades by area, not one overall grade; older grades stand until a school is re-inspected.

SchoolPhaseAgesDistanceInspection
Unity Primary AcademyPrimary2–11200 m No overall grade (Jun 2025, graded inspection without an overall judgement): Quality of education: Good; Behaviour and attitudes: Good; Personal development: Outstanding; Leadership and management: Good
Colchester AcademySecondary11–16800 m (0.5 miles) Good (Mar 2023, overall grade under the previous framework)
Hazelmere Junior SchoolPrimary7–11890 m (0.6 miles) Good (Jul 2022, overall grade under the previous framework)
Hazelmere Infant School and NurseryPrimary4–7890 m (0.6 miles) No overall grade (Jun 2025, graded inspection without an overall judgement): Quality of education: Requires improvement; Behaviour and attitudes: Good; Personal development: Good; Leadership and management: Requires improvement
Willow Brook Primary School and NurseryPrimary3–111.1 km (0.7 miles) Good (Nov 2022, overall grade under the previous framework)
Roach Vale Primary SchoolPrimary4–111.1 km (0.7 miles) Good (May 2023, overall grade under the previous framework)
Parsons Heath Church of England Voluntary Controlled Primary SchoolPrimary4–111.2 km (0.8 miles) No published inspection
St James the Great Church of England Primary SchoolPrimary2–111.4 km (0.9 miles) Good (Sep 2019, overall grade under the previous framework)
Kendall Church of England Primary SchoolPrimary4–111.4 km (0.9 miles) No overall grade (Jun 2025, graded inspection without an overall judgement): Quality of education: Outstanding; Behaviour and attitudes: Outstanding; Personal development: Outstanding; Leadership and management: Outstanding
Friars Grove Primary SchoolPrimary5–111.6 km (1 mile) No published inspection
St Thomas More's Catholic Primary School, ColchesterPrimary4–111.6 km (1 mile) Outstanding (Nov 2023, overall grade under the previous framework)
St. George's SchoolPrimary3–111.9 km (1.2 miles) Good (Nov 2023, overall grade under the previous framework)

Food hygiene ratings nearby

Source: Food Standards Agency, Food Hygiene Rating Scheme, extract of 3 November 2026. Each rating is shown with the date it was given; a business may have been re-inspected since the extract. Within 500 m (0.3 miles) of the middle of the street.

BusinessTypeDistanceRatingRated
Mickleboro Lodge CO4 3AGHospitals/Childcare/Caring Premises250 m4 Good26 Aug 2026
The Beeches Pre-School CO4 3AQHospitals/Childcare/Caring Premises270 m5 Very good8 Dec 2020
Greenstead Association Social Club CO4 3QDPub/bar/nightclub310 m5 Very good11 Aug 2026
Yawee Foods CO1 2XLRetailers - other380 m3 Generally satisfactory29 Apr 2025
VARIETYZEN LTD CO1 2XLDistributors/Transporters380 m5 Very good9 Sep 2026
Colchester Community Supermarket CO4 3PXRetailers - other390 m5 Very good29 Feb 2024
Greenstead Foodbank CO4 3PXRetailers - other410 m (0.3 miles)5 Very good13 Feb 2021
Greenstead Fish & Chips CO4 3PXTakeaway/sandwich shop410 m (0.3 miles)5 Very good16 Sep 2026
East of England Co-op CO4 3PXRetailers - supermarkets/hypermarkets410 m (0.3 miles)5 Very good23 Jul 2025
Osgood Smith CO1 2SWDistributors/Transporters410 m (0.3 miles)5 Very good17 Aug 2026
Yawee Foods CO1 2XLRetailers - other420 m (0.3 miles)3 Generally satisfactory29 Apr 2025
D Village Kitchen CO1 2XLRestaurant/Cafe/Canteen420 m (0.3 miles)3 Generally satisfactory30 Apr 2025
Tesco Stores Ltd CO1 2TERetailers - supermarkets/hypermarkets450 m (0.3 miles)5 Very good12 Aug 2026
Costa Coffee CO1 2TERestaurant/Cafe/Canteen450 m (0.3 miles)5 Very good19 Nov 2024
Yo! To Go! CO1 2TEOther catering premises450 m (0.3 miles)5 Very good22 Aug 2025

Crime within 250 m

Source: data.police.uk street-level crime, September 2025 to August 2026. Police forces move every crime to the nearest of about 760,000 anonymised map points before publishing, so these are crimes near this street, not on it, and a busy point can collect crimes from a wider area. Counts are of records, not convictions.

200 recorded crimes by category
CategoryCrimes
Violence and sexual offences100
Vehicle crime17
Criminal damage and arson16
Anti-social behaviour14
Other theft12
Drugs11
Public order8
Burglary8
Possession of weapons6
Other crime5
Bicycle theft3

Most of these are attached to: On or near Hainault Close (38); On or near Hickory Avenue (37); On or near Howe Close (32); On or near Sherwood Close (22); On or near St Andrew'S Avenue (20).

People and work

Source: ONS Census 2021, taken on 21 March 2021, for the 2 Output Areas (small census areas of about 125 households each) that this street's postcodes are in: 693 residents in 231 households. The census was taken during a lockdown, so working from home is high and travel to work low compared with now. ONS swaps a few records between neighbouring areas and adds small amounts of noise to counts to protect privacy, so small differences mean little. Industry is not published for areas this small.

Who lives here

Around this streetEngland
Median age2540
Children under 1520%17%
Aged 65 and over11%18%

Homes

Around this streetEngland
Owned (outright or with a mortgage)28%61%
Owned outright17%33%
Shared ownership0%1%
Social rented42%17%
Private rented29%21%

Work and commuting

Around this streetEngland
Adults (16 and over) in work45%57%
Unemployment (of those working or looking for work)13%6%
Retired (of adults)11%22%
Long-term sick or disabled (of adults)7%4%
Work mainly from home (of those in work)13%32%
Travel to work by car or van57%48%
By train, Underground, metro or tram1%4%
By any public transport, including bus8%8%
On foot or by bicycle21%10%
Work within 10 km (6 miles) of home (of those who travel to work)80%65%
Work 30 km (19 miles) or more away11%8%

Education and languages

Around this streetEngland
Degree or other higher qualification, Level 4+ (of adults)17%34%
No qualifications21%18%
Apprenticeship as highest qualification4%5%
Main language English (aged 3 and over)88%91%
Cannot speak English well or at all1%2%

Deprivation

The neighbourhood around this street is in decile 2 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.

Source: English Indices of Deprivation 2025 (Ministry of Housing, Communities and Local Government), by LSOA (about 1,500 people), through the ONS Postcode Directory. The index combines income, employment, health, education, crime, housing and living environment; it ranks areas against each other and does not describe any one household. Ranks in England and Wales are worked out separately and cannot be compared.

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.

Everything that has changed on and near this street

Postcodes on this street

Source: ONS Postcode Directory August 2026, ONS UPRN Directory September 2026, OS Open Linked Identifiers September 2026. A postcode can cover more than one street; the share shows how many of its addresses are on this one.

  • CO4 3QU: 12 addresses of 13 in the postcode
  • CO4 3QZ: 10 addresses
  • CO4 3QN: 1 address of 17 in the postcode
  • CO4 3RA: 1 address of 19 in the postcode

Nearby streets

Sherwood Close · Dahlia Walk · Gorse Walk · Hainault Close · Erica Walk · Forest Road · Geranium Walk · Clarkia Walk · Dewberry Close · Howe Close · Whitethorn Close · Elm Crescent

All the streets in CO4 and across Colchester.

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.