Ross Road Twickenham, Richmond upon Thames

71 addresses across 3 postcodes (TW2), about 410 m (0.3 miles) long, classed as a local road. USRN 22401802.

  • Sales: 41 recorded sales since 1995; in 2022 the median was £520,000 across 1 sale.
  • Energy: 41 homes have an energy certificate (B: 5, C: 21, D: 15).
  • 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 F; Band D in Richmond upon Thames costs £2,486 a year in 2026-27.
  • Broadband: Gigabit broadband is available to 89% to 100% of premises.
  • Transport: The nearest railway station is Whitton (London), about 580 m (0.4 miles) away in a straight line.
  • Green space: The nearest park or garden, Crane Park, is about 280 m away.
  • Air: Background air pollution in 2024 was 16.2 µg/m³ of nitrogen dioxide and 8.5 of PM2.5, within UK legal limits.
  • Height: It is about 20 m above sea level.
  • Noise: 69 of its 71 addresses are modelled at 55 dB or more from road traffic.
  • Doctors: The nearest GP surgery is Jubilee Surgery, about 70 m away, with 6 practices within 1.6 km (1 mile).
  • People: About 740 people lived in the census areas around it in 2021; 81% of households owned their home and 47% of adults held a degree or other higher qualification.
  • Crime: 58 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
20221£520,000£520,000£520,000
20211£310,000£310,000£310,000
20164£294,975£250,000£392,700
20151£312,500£312,500£312,500
20142£208,475£200,000£216,950
20111£140,000£140,000£140,000
20101£228,750£228,750£228,750
20091£144,000£144,000£144,000
20082£242,475£235,000£249,950
20072£193,500£155,000£232,000
20062£214,000£180,000£248,000
20051£192,995£192,995£192,995
Most recent sales (41)
DateAddressTypePriceNotes
31 Mar 202310, ROSS HOUSE TW2 6JPFlat or maisonette£355,000Leasehold. Not a standard sale (repossession, buy-to-let or transfer).
29 Mar 202311, ROSS HOUSE TW2 6JPFlat or maisonette£335,000Leasehold. Not a standard sale (repossession, buy-to-let or transfer).
4 Nov 20223 TW2 6JRTerraced£520,000
3 Sep 20212, ROSS HOUSE TW2 6JPFlat or maisonette£310,000Leasehold.
30 Mar 20162 TW2 6JRSemi-detached£392,700
26 Feb 201617 TW2 6JRFlat or maisonette£250,000Leasehold.
19 Feb 201611, ROSS HOUSE TW2 6JPFlat or maisonette£329,950Leasehold.
29 Jan 201622 TW2 6JRFlat or maisonette£260,000Leasehold.
28 Aug 201510, ROSS HOUSE TW2 6JPFlat or maisonette£312,500Leasehold.
28 Aug 201422 TW2 6JRFlat or maisonette£216,950Leasehold.
14 Aug 201410, ROSS HOUSE TW2 6JPFlat or maisonette£200,000Leasehold.
16 Aug 20139, ROSS HOUSE TW2 6JPFlat or maisonette£223,000Leasehold. Not a standard sale (repossession, buy-to-let or transfer).
22 Feb 201121 TW2 6JRFlat or maisonette£140,000Leasehold.
16 Apr 201011 TW2 6JRSemi-detached£228,750
4 Sep 200920 TW2 6JRFlat or maisonette£144,000Leasehold.
31 Oct 200814 TW2 6JRTerraced£249,950
4 Apr 200812, ROSS HOUSE TW2 6JPFlat or maisonette£235,000Leasehold.
20 Sep 20075, ROSS HOUSE TW2 6JPFlat or maisonette£232,000Leasehold.
4 Apr 200717 TW2 6JRFlat or maisonette£155,000Leasehold.
20 Dec 200640 TW2 6JRSemi-detached£248,000
16 Jun 20064 TW2 6JRSemi-detached£180,000
11 Jul 20059, ROSS HOUSE TW2 6JPFlat or maisonette£192,995Leasehold.
17 Dec 20046 TW2 6JRSemi-detached£212,000
28 Aug 20045, ROSS HOUSE TW2 6JPFlat or maisonette£172,000Leasehold.
17 Aug 200422 TW2 6JRFlat or maisonette£152,000Leasehold.
21 Nov 20033 TW2 6JRTerraced£220,000
31 Jan 200340 TW2 6JRSemi-detached£181,000
26 Apr 200222 TW2 6JRFlat or maisonette£113,000Leasehold.
27 Feb 200235 TW2 6JRSemi-detached£165,000
20 Dec 20016 TW2 6JRSemi-detached£149,000
5 Dec 20019, ROSS HOUSE TW2 6JPFlat or maisonette£127,000Leasehold.
3 Mar 200035 TW2 6JRSemi-detached£126,000
3 Dec 19993 TW2 6JRSemi-detached£134,950
13 Sep 19993, ROSS HOUSE TW2 6JPFlat or maisonette£86,950Leasehold.
29 Apr 19991 TW2 6JRSemi-detached£129,950
30 Jun 19987 TW2 6JRSemi-detached£102,000
23 Jun 19983 TW2 6JRSemi-detached£116,000
30 Oct 199722 TW2 6JRFlat or maisonette£56,000Leasehold.
25 Jul 19976, ROSS HOUSE TW2 6JPFlat or maisonette£62,000Leasehold.
24 Jan 199722 TW2 6JRFlat or maisonette£46,500Leasehold.
29 Sep 199511, ROSS HOUSE TW2 6JPFlat or maisonette£43,000Leasehold.

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 June 2010 and some homes have none. Address data © Ordnance Survey and Royal Mail, shown for understanding the energy efficiency of buildings only.

41 homes with a current certificate; median floor area 64 m². Most common: Flat (19); House, semi-detached (13); Maisonette, mid-terrace (5). Built: 1950-1966 (20); 1967-1975 (9); 2003-2006 (6). Tenure at assessment: owner-occupied (17); rented (social) (11); rented (private) (1).

Each home's certificates and sales (19 addresses)

Council tax

What each band costs in Richmond upon Thames in 2026-27: Band D £2,486 a year on average, including the police, fire and any county and parish charges.

ABCDEFGH
£1,657£1,934£2,210£2,486£3,039£3,591£4,144£4,972

Homes by band in the neighbourhood around this street: most are in band F (47% of about 570 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

Finished in the last three months

  • 14 August 2026 to 24 August 2026: LONDON BOROUGH OF RICHMOND UPON THAMES, Highway improvement works, give and take, on the footway (standard works)

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 1 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
TW2 6JRnot in 2 or 3 0 / 0 / 0 unlikely
TW2 6JPnot in 2 or 3 0 / 0 / 0 unlikely
TW2 6JJnot in 2 or 3 0 / 0 / 1 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 addresses are about 20 m above sea level.

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
TW2 6JJ100%100%100%0%
TW2 6JP100%100%100%0%
TW2 6JR100%89%89%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 stationsWhitton (London) 1.3 million journeys in 2024–25580 m (0.4 miles)
Fulwell 437,000 journeys in 2024–251.4 km (0.9 miles)
Strawberry Hill 688,000 journeys in 2024–251.6 km (1 mile)
Bus stops11 stops within 400 m (0.2 miles), 31 within 800 m (0.5 miles); nearest Ryecroft Avenue Whitton100 m
Bus or coach stationCromwell Road Bus Station Kingston Upon Thames5.6 km (3.5 miles)
Ferry terminalTwickenham Hammerton's Pier3.2 km (2 miles)
Car parks3 within 800 m (0.5 miles); nearest Parking space on College Close, TW2660 m (0.4 miles)
EV charging points64 within 1.6 km (1 mile); nearest ubitricity110 m
Airport with scheduled flightsLondon Heathrow Airport LHR7.5 km (4.6 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 surgeries6 practices within 1.6 km (1 mile); nearest Jubilee Surgery70 m
Pharmacies8 pharmacies within 1.6 km (1 mile); nearest Whitton Corner Pharmacy70 m
NHS dentists8 practices within 1.6 km (1 mile); nearest Eye Smile LTD T/A Whitton Corner70 m
HospitalTeddington Hospital2.5 km (1.6 miles)
Police stationTwickenham Police Station2.2 km (1.4 miles)
Cash machines4 machines within 800 m (0.5 miles); nearest MFG - Staines Road Cashzone640 m (0.4 miles)

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 garden2 within 800 m (0.5 miles); nearest Crane Park 31 ha280 m
Play area1 within 800 m (0.5 miles); nearest Unnamed 1,740 m²750 m (0.5 miles)
Playing field2 within 800 m (0.5 miles); nearest Unnamed 6.4 ha680 m (0.4 miles)
Allotments2 within 800 m (0.5 miles); nearest Mill Road Allotment 3,840 m²260 m

Within 800 m (0.5 miles): 2 parks and gardens, 36 hectares in all.

Landmarks

The nearest historic landmark is Teddington Cemetery, a registered park or garden (Grade II), 1.8 km (1.1 miles) south-east. 2 listed buildings are within 1 km (0.6 miles).

Historic places
NameWhat it isFrom the middle of the street
Teddington CemeteryRegistered park or garden, Grade II1.8 km (1.1 miles) south-east
Pope's GardenRegistered park or garden, Grade II2 km (1.2 miles) east
Royal Botanic Gardens, KewWorld Heritage Site5.8 km (3.6 miles) north-east
Natural landmarks within 5 km (3.1 miles)
NameWhat it isFrom the middle of the street
Crane Park IslandIsland1.2 km (0.8 miles) west
Cross DeepTidal water2.1 km (1.3 miles) east
Swan IslandIsland2.2 km (1.3 miles) east
Hampton Hill PondLake or reservoir2.3 km (1.4 miles) south
Eel Pie IslandIsland2.5 km (1.5 miles) east
Canal PlantationWood2.5 km (1.5 miles) south

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)16.24010
Fine particles (PM2.5)8.5205
Particles (PM10)13.34015

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

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 trafficRailwaysAircraft
70 to 74700
65 to 694500
60 to 641400
55 to 59300
Under 5527171

69 of the street's 71 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 Richmond upon Thames: see them on the Richmond upon Thames 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
Twickenham SchoolSecondary11–16180 m Report card (Dec 2025): Curriculum and teaching: Expected standard; Achievement: Expected standard; Attendance and behaviour: Expected standard; Personal development and wellbeing: Expected standard; Inclusion: Strong standard; Leadership and governance: Strong standard; Safeguarding standards: Met
Bishop Perrin Church of England Primary SchoolPrimary4–11580 m (0.4 miles) Outstanding (Feb 2024, overall grade under the previous framework)
Heathfield Junior SchoolPrimary7–11660 m (0.4 miles) No published inspection
Heathfield Infant SchoolPrimary3–7660 m (0.4 miles) No published inspection
Trafalgar Infant SchoolPrimary5–7700 m (0.4 miles) Good (Dec 2023, overall grade under the previous framework)
Turing House SchoolSecondary11–19810 m (0.5 miles) No overall grade (Dec 2024, graded inspection without an overall judgement): Quality of education: Outstanding; Behaviour and attitudes: Outstanding; Personal development: Outstanding; Leadership and management: Outstanding
St Edmund's Catholic Primary School Roman CatholicPrimary3–11900 m (0.6 miles) No published inspection
Waldegrave SchoolSecondary11–18900 m (0.6 miles) No published inspection
Nelson Primary SchoolPrimary3–11930 m (0.6 miles) Good (Sep 2023, overall grade under the previous framework)
Trafalgar Junior SchoolPrimary7–11940 m (0.6 miles) Good (Jun 2023, overall grade under the previous framework)
St James's Catholic Primary School Roman CatholicPrimary3–111.3 km (0.8 miles) No overall grade (Oct 2024, graded inspection without an overall judgement): Quality of education: Outstanding; Behaviour and attitudes: Outstanding; Personal development: Outstanding; Leadership and management: Outstanding
Archdeacon Cambridge's Church of England Primary SchoolPrimary3–111.4 km (0.8 miles) No published inspection

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
Whitton Community Association Charity no 1199321) TW2 6JLRestaurant/Cafe/Canteen260 m3 Generally satisfactory28 Nov 2024
Homelink TW2 6DEOther catering premises330 m5 Very good2 Aug 2024
The Winning Post TW2 6LSPub/bar/nightclub340 m5 Very good21 Jul 2026
DIACOS CAFE TW2 6DFRestaurant/Cafe/Canteen380 m3 Generally satisfactory19 Aug 2026
Elysium Healthcare Limited TW2 6LARestaurant/Cafe/Canteen460 m (0.3 miles)5 Very good22 Oct 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.

58 recorded crimes by category
CategoryCrimes
Violence and sexual offences19
Vehicle crime12
Anti-social behaviour12
Criminal damage and arson3
Other theft3
Burglary3
Drugs2
Other crime2
Public order1
Possession of weapons1

Most of these are attached to: On or near Ross Road (37); On or near Percy Road (12); On or near Selkirk Road (9).

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: 740 residents in 287 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 age4640
Children under 1520%17%
Aged 65 and over24%18%

Homes

Around this streetEngland
Owned (outright or with a mortgage)81%61%
Owned outright47%33%
Shared ownership0%1%
Social rented11%17%
Private rented8%21%

Work and commuting

Around this streetEngland
Adults (16 and over) in work53%57%
Unemployment (of those working or looking for work)5%6%
Retired (of adults)30%22%
Long-term sick or disabled (of adults)2%4%
Work mainly from home (of those in work)51%32%
Travel to work by car or van29%48%
By train, Underground, metro or tram7%4%
By any public transport, including bus11%8%
On foot or by bicycle8%10%
Work within 10 km (6 miles) of home (of those who travel to work)67%65%
Work 30 km (19 miles) or more away2%8%

Education and languages

Around this streetEngland
Degree or other higher qualification, Level 4+ (of adults)47%34%
No qualifications12%18%
Apprenticeship as highest qualification4%5%
Main language English (aged 3 and over)95%91%
Cannot speak English well or at all1%2%

Deprivation

The neighbourhood around this street is in decile 9 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.

Nearby streets

Selkirk Road · Percy Road · Strathearn Avenue · Ryecroft Avenue · Lincoln Avenue · Hereford Gardens · Fairfield Avenue · Percy Way · Blandford Avenue · Gloucester Road

All the streets in TW2 and across Richmond upon Thames.

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.