The Triangle is in Sidcup and in Bexley district. DA15 8LT is located in the Blackfen & Lamorbey electoral ward, within the English Parliamentary constituency of Old Bexley and Sidcup. This postcode has been in use since 1980-01-01.
StreetScan combines information about The Triangle, Sidcup, DA15 8LT and displays a report on the quality of life in this place and its surroundings.
Nearby postcodes are: DA15 9ER, DA15 8LP, DA15 8NH, DA15 8LN, DA15 9HQ, DA15 9HB, DA15 9JP, DA15 8NL, DA15 9ES.
In the UK, the overall gender distribution is approximately 49% male and 51% female. However, the area surrounding DA15 8LT, has a female population slightly higher than UK average, with 54.4% of residents being female. Several factors can contribute to this. Women generally live longer than men, resulting in a higher proportion of women in neighborhoods with significant elderly populations. Typically, as people grow older, they tend to relocate from city center addresses to suburban areas, smaller towns, and rural locations. Consequently, these areas often have a higher number of females. A higher female population can also be found in areas with industries that employ more women, such as healthcare, education, and retail.
| 2011 | 2021 | 10y change (pp) | UK Average | postcode vs UK (pp) | |
|---|---|---|---|---|---|
| Female | 52.3% | 54.4% | 2.1% | 51.0% | 3.4% |
| Male | 47.7% | 45.6% | -2.1% | 49.0% | -3.4% |
Across the UK, the average relationship status breakdown is roughly 44% married, 38% single, 9% divorced, 6% widowed, and 2% separated.
| 2011 | 2021 | 10y change (pp) | UK Average | postcode vs UK (pp) | |
|---|---|---|---|---|---|
| Single | 36.8% | 39% | 2.2% | 37.9% | 1.1% |
| Married: Opposite sex | 51% | 45.2% | -5.8% | 44.2% | 1.0% |
| Married: Same sex | 0.3% | 0.6% | 0.3% | 0.3% | 0.3% |
| Separated | 2.6% | 3.5% | 0.9% | 2.2% | 1.3% |
| Divorced | 5.6% | 6.5% | 0.9% | 9.1% | -2.6% |
| Widowed | 3.6% | 5.2% | 1.6% | 6.1% | -0.9% |
Across the UK, the average 48.4% rated their health as Very Good, 33.6% as Good, 12.7% as Fair, 4% as Bad, and 1.2% as Very Bad.
Population age significantly impacts residents' health. Additionally, socioeconomic status plays a crucial role: higher income levels and lower poverty rates are linked to better health outcomes. Affluent areas benefit from higher living standards, access to private healthcare, and healthier lifestyle choices.
This area has a high percentage of residents reporting their health as Good or Very Good (87.6%) compared to the average (82%). This typically indicates either a younger population or more affluent area.
| 2011 | 2021 | 10y change (pp) | UK Average | postcode vs UK (pp) | |
|---|---|---|---|---|---|
| Very good health | 54.9% | 51.7% | -3.2% | 48.4% | 3.3% |
| Good health | 32.1% | 35.9% | 3.8% | 33.6% | 2.3% |
| Fair health | 10.1% | 9.8% | -0.3% | 12.7% | -2.9% |
| Bad health | 1.9% | 2.1% | 0.2% | 4.0% | -1.9% |
| Very bad health | 1.1% | 0.5% | -0.6% | 1.2% | -0.7% |
During the 2021 census, the educational qualifications of residents across the UK were as follows: 18.2% had no qualifications, 9.6% had 1-4 GCSEs, 13.4% had 5 or more GCSEs and 1-2 A/AS Levels, 16.9% had 2 or more A Levels, 33.8% held a degree (or equivalent), and 5.4% had completed an apprenticeship.
| 2011 | 2021 | 10y change (pp) | UK Average | postcode vs UK (pp) | |
|---|---|---|---|---|---|
| No qualifications | 15.2% | 15.8% | 0.6% | 18.2% | -2.4% |
| 1-4 GCSEs or Equivalent | 17.9% | 8.7% | -9.2% | 9.6% | -0.9% |
| 5 or more GCSEs, an A-Level or 1-2 AS Levels | 23.8% | 17% | -6.8% | 13.4% | 3.6% |
| Apprenticeship | 5.3% | 7.4% | 2.1% | 5.3% | 2.1% |
| HNC, HND or 2+ A Levels | 13.6% | 21.2% | 7.6% | 16.9% | 4.3% |
| Degree or Similar | 17.5% | 27.3% | 9.8% | 33.8% | -6.5% |
| Other | 6.6% | 2.6% | -4.0% | 2.8% | -0.2% |
This area closely mirrors the overall ethnic composition of the UK, with 84.3% of the population identifying as white, with UK average of 81.4%.
| 2011 | 2021 | 10y change (pp) | UK Average | postcode vs UK (pp) | |
|---|---|---|---|---|---|
| Chinese | 1.1% | 1.6% | 0.5% | 0.7% | 0.9% |
| Indian | 1.6% | 1.6% | 0.0% | 3.1% | -1.5% |
| Other Asian | 4% | 5.9% | 1.9% | 1.6% | 4.3% |
| Black African | 0% | 1.6% | 1.6% | 2.5% | -0.9% |
| Black Caribbean | 0% | 0.5% | 0.5% | 1.0% | -0.5% |
| Mixed White and African | 0.3% | 0.5% | 0.2% | 0.4% | 0.1% |
| Mixed White and Caribbean | 0.5% | 0% | -0.5% | 0.9% | -0.9% |
| Mixed Other | 0.3% | 0.8% | 0.5% | 0.8% | 0.0% |
| White | 91.5% | 84.3% | -7.2% | 81.4% | 2.9% |
| Gypsy or Irish Traveller | 0.3% | 0% | -0.3% | 0.1% | -0.1% |
| Arab | 0.5% | 0% | -0.5% | 0.6% | -0.6% |
| Other | 0% | 3.2% | 3.2% | 1.6% | 1.6% |
In this area, 79.4% of the population were born in the United Kingdom, which is similar to the UK average of 83.2%.
| 2011 | 2021 | 10y change (pp) | UK Average | postcode vs UK (pp) | |
|---|---|---|---|---|---|
| United Kingdom | 89.9% | 79.4% | -10.5% | 83.2% | -3.8% |
| European Union | 3.2% | 9.8% | 6.6% | 6.1% | 3.7% |
| Rest of Europe | 0.5% | 0.8% | 0.3% | 0.8% | 0.0% |
| Africa | 1.1% | 1.6% | 0.5% | 2.7% | -1.1% |
| Middle East and Asia | 3.2% | 6.1% | 2.9% | 5.6% | 0.5% |
| The Americas and the Caribbean | 0.8% | 1.6% | 0.8% | 1.3% | 0.3% |
| Oceania | 1.3% | 0.8% | -0.5% | 0.3% | 0.5% |
| 2011 | 2021 | 10y change (pp) | UK Average | postcode vs UK (pp) | |
|---|---|---|---|---|---|
| Born in the UK | 89.4% | 79.2% | -10.2% | 83.2% | -4.0% |
| 10+ Years | 1.9% | 11.6% | 9.7% | 9.8% | 1.8% |
| 5-10 Years | 2.4% | 4.2% | 1.8% | 2.9% | 1.3% |
| 2-5 Years | 1.9% | 2.6% | 0.7% | 2.2% | 0.4% |
| Less than 2 years | 4.5% | 2.4% | -2.1% | 1.9% | 0.5% |
| 2021 | UK Average | postcode vs UK (pp) | |
|---|---|---|---|
| United Kingdom | 79.9% | 76.7% | 3.2% |
| Ireland | 1.3% | 0.6% | 0.7% |
| France | 1.3% | 0.3% | 1.0% |
| Portugal | 1.3% | 0.5% | 0.8% |
| Spain | 0.3% | 0.4% | -0.1% |
| Romania | 4.4% | 0.9% | 3.5% |
| Other EU countries | 0.8% | 1.5% | -0.7% |
| Turkey | 0.5% | 0.1% | 0.4% |
| Central and Western Africa | 0.3% | 0.3% | 0.0% |
| Middle East | 0.8% | 0.1% | 0.7% |
| Eastern Asia | 0.5% | 0.3% | 0.2% |
| Southern Asia | 2.6% | 1.2% | 1.4% |
| North America and the Caribbean | 0.8% | 0.3% | 0.5% |
| Central and South America | 0.3% | 0.2% | 0.1% |
| Oceania | 0.3% | 0.1% | 0.2% |
| No passport held | 4.7% | 13.5% | -8.8% |
| 2021 | UK Average | postcode vs UK (pp) | |
|---|---|---|---|
| No religion | 31.2% | 37.2% | -6.0% |
| Christian | 55.6% | 46.2% | 9.4% |
| Buddhist | 1.3% | 0.5% | 0.8% |
| Hindu | 4.2% | 1.7% | 2.5% |
| Muslim | 2.6% | 6.5% | -3.9% |
| Other religion | 0.5% | 0.6% | -0.1% |
| Not answered | 4.5% | 6.0% | -1.5% |
Over the last 12 months, the overall crime rate around The Triangle was 168.3 per 1,000 residents, which is 206.4% higher than the Blackfen & Lamorbey average. The most reported crime type was Shoplifting.
The Triangle has the 8th highest crime rate of 120 local areas in Blackfen & Lamorbey and the 75th highest crime rate of 725 local areas in Bexley .
Violent and sexual offences accounted for around 26.4 crimes per 1,000 residents and have been falling year on year. Over the last decade, overall crime has fallen by about -7.1%.

Households in this area have a higher level of wealth to the average household in England and Wales. 80% of analyzed areas in England and Wales have lower average household annual income than this area.

| Address | Sale Price | Sale Date | Price Estimate 2025 |
|---|---|---|---|
| 2 The Triangle, Sidcup, Greater London Flats/Maisonettes, an established residential building | £258,000 | 2021-02-01 | £278,444 |
| 4 The Triangle, Sidcup, Greater London Flats/Maisonettes, an established residential building | £260,000 | 2018-11-30 | £287,337 |
| 2 The Triangle, Sidcup, Greater London Flats/Maisonettes, an established residential building | £241,000 | 2016-12-16 | £272,889 |
| 4 The Triangle, Sidcup, Greater London Flats/Maisonettes, an established residential building | £187,500 | 2014-07-03 | £282,418 |
| 4 The Triangle, Sidcup, Greater London Flats/Maisonettes, an established residential building | £140,000 | 2011-08-03 | £258,853 |
DA15 8LT area has a high level of entrepreneurship. Only 20% of streets have higher percent of entrepreneur residents. 13% of population in this area is self-employed, while the average in the UK is 9.7%. High number of entrepreneurs usually leads to relatively high economic growth, higher paid jobs and better quality of life in the area.
DA15 8LT area has a low unemployment rate. According to Census 2021, 2% residents of this area were unemployed, while the average in the UK was 4.83%. A low level of unemployment in an area indicates a strong job market, where most people who are seeking work can find employment. This generally reflects a healthy economy in the area.
| Full-Time Employee | 120 |
| Retired | 52 |
| Part-Time Employee | 51 |
| Self-Employed | 39 |
| Student (economically inactive) | 17 |
| Other | 9 |
| Full-Time Student (with or without job) | 8 |
| Unemployed | 6 |
| Long-Term Sick or disabled | 5 |
| Looking after home or family | 5 |
| Construction | 35 |
| Wholesale and retail trade; repair of motor vehicles and motor cycles | 34 |
| Education | 20 |
| Financial and insurance activities | 18 |
| Human health and social work activities | 15 |
| Public administration and defence; compulsory social security | 14 |
| Transport and storage | 14 |
| Professional, scientific and technical activities | 13 |
| Administrative and support service activities | 11 |
| Other | 11 |
| Accommodation and food service activities | 7 |
| Manufacturing | 7 |
| Information and communication | 5 |
| Real estate activities | 1 |
| Water supply; sewerage, waste management and remediation activities | 1 |
| Ofsted Overall Effectiveness | Distance | Establishment Type | Has Nursery Classes | Gender | More Info | |
|---|---|---|---|---|---|---|
| Abbey Wood Nursery School Dahlia Road , SE2 0SX | 3out of 4 | 4,962 yd | Local authority nursery school | Yes | Mixed | More About School |
| Ofsted Overall Effectiveness | Distance | Establishment Type | Has Nursery Classes | Gender | More Info | |
|---|---|---|---|---|---|---|
| Days Lane Primary School Days Lane , DA15 8JU | 3out of 4 | 268 yd | Academy converter | Yes | Mixed | More About School |
| Our Lady of the Rosary Catholic Primary School Holbeach Gardens , Blackfen DA15 8QW | 3out of 4 | 726 yd | Voluntary aided school | Yes | Mixed | More About School |
| Chatsworth Infant School Burnt Oak Lane , DA15 9DD | 3out of 4 | 806 yd | Academy converter | Yes | Mixed | More About School |
| Sherwood Park Primary School Sherwood Park Avenue , DA15 9JQ | 3out of 4 | 811 yd | Academy converter | Yes | Mixed | More About School |
| Burnt Oak Junior School Burnt Oak Lane , DA15 9DA | 4out of 4 | 1,041 yd | Academy sponsor led | No | Mixed | More About School |
| Ofsted Overall Effectiveness | Distance | Establishment Type | Has Nursery Classes | Gender | More Info | |
|---|---|---|---|---|---|---|
| Blackfen School for Girls Blackfen Road , DA15 9NU | 3out of 4 | 884 yd | Academy converter | No | Girls | More About School |
| Bexley Grammar School Danson Lane , DA16 2BL | 4out of 4 | 1,325 yd | Academy converter | Not Applicable | Mixed | More About School |
| Chislehurst and Sidcup Grammar School Hurst Road , DA15 9AG | 3out of 4 | 1,365 yd | Academy converter | Not Applicable | Mixed | More About School |
| Hurstmere School Hurst Road , DA15 9AW | 2out of 4 | 1,386 yd | Academy converter | Not Applicable | Boys | More About School |
| Harris Academy Falconwood The Green , DA16 2PE | 4out of 4 | 1,708 yd | Academy sponsor led | Not Applicable | Mixed | More About School |
| Ofsted Overall Effectiveness | Distance | Establishment Type | Has Nursery Classes | Gender | More Info | |
|---|---|---|---|---|---|---|
| Shooters Hill Sixth Form College Red Lion Lane , SE18 4LD | - not rated | 4,406 yd | Academy 16-19 converter | No | Mixed | More About School |
| Ofsted Overall Effectiveness | Distance | Establishment Type | Has Nursery Classes | Gender | More Info | |
|---|---|---|---|---|---|---|
| Marlborough School Marlborough Park Avenue , DA15 9DP | 3out of 4 | 595 yd | Community special school | Not Applicable | Mixed | More About School |
| Rose Bruford College Lamorbey Park , Burnt Oak Lane DA15 9DF | - not rated | 977 yd | Higher education institutions | Not Applicable | Mixed | More About School |
| West Lodge School 36 Station Road , Sidcup DA15 7DU | - not rated | 2,076 yd | Other independent school | Yes | Mixed | More About School |
| Benedict House Preparatory School 1-5 Victoria Road , DA15 7HD | - not rated | 2,129 yd | Other independent school | Yes | Mixed | More About School |
| Park View Academy 146-148 Parkview Road , DA16 1SR | - not rated | 2,144 yd | Other independent special school | Not Applicable | Mixed | More About School |
School statistics for this postcode are based on Ofsted rankings.
| Business Name | Address | Food hygiene rating | Distance |
|---|---|---|---|
| The Oval Brasserie | 49 The Oval, Sidcup | 76 yd | |
| Hayat Restaurant | 25 The Oval, Sidcup | 76 yd | |
| Pride Of India | 35 The Oval, Sidcup | 76 yd | |
| El Iberico | 21 The Oval, Sidcup | 82 yd | |
| Banana Garden | 17 The Oval, Sidcup | 82 yd |
| Business Name | Address | Food hygiene rating | Distance |
|---|---|---|---|
| The Hangar Sidcup | 37 The Oval, Sidcup | 50 yd | |
| Rosary Parish Club | 330A Burnt Oak Lane, Sidcup | 394 yd | |
| Copper House Blackfen | 31 Wellington Parade, Blackfen Road | 610 yd | |
| Tap Sidcup | 3 Wellington Parade, Blackfen Road | 612 yd | |
| George Staples (88th Street / Value Mighty / Sin City Burger | 273 Blackfen Road, Sidcup | 688 yd |
| Business Name | Address | Food hygiene rating | Distance |
|---|---|---|---|
| New World Chinese Takeaway | 39 The Oval, Sidcup | 76 yd | |
| Oval Fish Bar | 43 The Oval, Sidcup | 82 yd | |
| Chapter Tep | 10 Wellington Parade, Blackfen Road | 609 yd | |
| LBs Pie & Mash | 16 Wellington Parade, Blackfen Road | 615 yd | |
| Oscar's Fish And Chips | 35 Wellington Parade, Blackfen Road | 615 yd |
| Business Name | Address | Food hygiene rating | Distance |
|---|---|---|---|
| Tesco | 10 - 11 Blackfen Parade, Blackfen Road | 556 yd | |
| The Co-Operative | Westwood Lane, Sidcup | 638 yd |
| Facility Name | Sport Objects | Distance |
|---|---|---|
| Days Lane Primary School DAYS LANE | grass pitches | 404 yd |
| Marlborough Park (Closed) Marlborough Park Avenue | grass pitches | 503 yd |
| Blackfen School For Girls BLACKFEN ROAD | grass pitches | 766 yd |
| Our Lady Of The Rosery Catholic Primary School HOLBEACH GARDENS | grass pitches | 862 yd |
| Penhill Park ROWLEY AVENUE | grass pitches | 870 yd |
| Sidcup Youth Centre Burnt Oak Lane | 931 yd | |
| Burnt Oak Junior School BURNT OAK LANE | grass pitches | 984 yd |
| Holy Trinity Lamorbey C Of E Primary School Burnt Oak Lane | grass pitches | 1,022 yd |
| Sidcup Golf Club HURST ROAD | golf | 1,090 yd |
This statistics are based on Active Places Data - Contains Data © Sport England
| Percentage of premises that have Superfast Broadband (30Mbit/s or greater) coverage from fixed broadband | 100.0% |
| Percentage of premises that have Ultrafast Broadband (100Mbit/s or greater) coverage from fixed broadband | 100.0% |
| Percentage of premises that have Ultrafast Broadband (300Mbit/s or greater) coverage from fixed broadband | 100.0% |
| Percentage of premises that have coverage from a Gigabit capable service from fixed broadband | 100.0% |
| Percentage of premises unable to receive 2Mbit/s | 0.0% |
| Percentage of premises unable to receive 5Mbit/s | 0.0% |
| Percentage of premises unable to receive 10Mbit/s | 0.0% |
| Percentage of premises unable to receive 30Mbit/s | 0.0% |
| Median download speed | 60 Mbit/s |
| Average download speed | 83 Mbit/s |
| Minimum download speed | 200 Mbit/s |
| Maximum download speed | 200 Mbit/s |
| Median upload speed | 14.3 Mbit/s |
| Average upload speed | 14.9 Mbit/s |
| Maximum upload speed | 20 Mbit/s |
Broadband statistics are based on Ofcom's Communications Market Report (CMR) 2022.