E63012046 /South East evidence profile
South East evidence profile
Slough digital planning profile
Slough is a large, non-coastal built-up area in South East. ONS records show a 2021 population of 166,868; the population expanded quickly between 2001 and 2021, while the 2015 to 2024 employment series shows modest employment growth. This profile turns those public observations into a reviewable website-planning brief without claiming that the figures measure searches, leads or Mosalio's physical presence.
01 / Data snapshot
What the reviewed source records
- BUA24 code
- E63012046
- ITL1 region
- South East
- Coastal
- Non-coastal
- Income-deprivation flag
- Higher deprivation
02 / Context
Three comparisons, with the benchmark stated
20% above the 11.2% median across complete England records in this ONS file.
2.7% above the 0% dataset median.
15% above the 224.1% dataset median.
These medians use every complete England record accepted from the same ONS file. They are descriptive context, not targets, forecasts or a national demand model.
03 / Distinctive pattern
Where this record sits within 936 complete England profiles
Lowest decile · percentile position 1.4 of 100.
Highest decile · percentile position 96.5 of 100.
Highest decile · percentile position 95.7 of 100.
These are the three values furthest from the middle percentile position for this record. A higher position means a higher published value, not a better outcome or evidence of search demand.
Evidence fingerprint: sha256:99f4c227ac9…a9c580dfff2e
04 / Constrained peers
Three named comparisons from the same reviewed source
Each peer is selected from all 936complete England records using the documented eight-metric distance. Deltas are Slough minus the named peer; a plus sign means the value recorded for Slough is higher.
Regional peer
Aylesbury · E63011452
South East. Nearest complete record in South East. ONS classification: Nearer - Medium deprivation - Working.
- 2021 population
- +79,458 people
- Population change, 2001 to 2021
- -2.5 pp
- Economic inactivity
- +2.8 pp
- Employment change, 2015 to 2024
- -2.6 pp
- 2023 median house price
- +£75,000
- House-price growth, 2001 to 2023
- +27.2 pp
- Population aged under 25
- +3.4 pp
- Population aged 65 or over
- -2.1 pp
Classification peer
Colchester · E63011220
East of England. Nearest complete record outside South East with the same ONS combined classification. ONS classification: Nearer - Higher deprivation - Working.
- 2021 population
- +36,472 people
- Population change, 2001 to 2021
- -1.2 pp
- Economic inactivity
- -2.6 pp
- Employment change, 2015 to 2024
- -5.1 pp
- 2023 median house price
- +£85,000
- House-price growth, 2001 to 2023
- -24 pp
- Population aged under 25
- +1.7 pp
- Population aged 65 or over
- -4.2 pp
National peer
Cambridge (Cambridge) · E63010556
East of England. Nearest remaining complete England record. ONS classification: Nearer - Lower deprivation - Working.
- 2021 population
- +14,126 people
- Population change, 2001 to 2021
- -5.6 pp
- Economic inactivity
- -6.4 pp
- Employment change, 2015 to 2024
- -14.6 pp
- 2023 median house price
- -£87,500
- House-price growth, 2001 to 2023
- -6.9 pp
- Population aged under 25
- -0.2 pp
- Population aged 65 or over
- -0.7 pp
05 / Evidence synthesis
Slough evidence synthesis: Population aged 65 or over, 2021 population, Population aged under 25
Slough is recorded as a large, non-coastal, working built-up area, nearer to a major town or city. This classification sets a transparent frame for the three observations below; it is not a persona, a service-area promise or proof of local search demand. Each finding pairs one distinctive percentile measure with one independently selected peer and one explicit validation route.
Eight-metric evidence matrix
The matrix shows every measure used by the peer-distance method, not only the three most distinctive values. Direction describes the published value relative to the middle percentile position; it is not a positive or negative judgement.
Highest-to-lowest percentile order: 2021 population → Population aged under 25 → Population change, 2001 to 2021 → 2023 median house price → House-price growth, 2001 to 2023 → Employment change, 2015 to 2024 → Economic inactivity → Population aged 65 or over.
Furthest-to-nearest distance from the middle percentile: Population aged 65 or over → 2021 population → Population aged under 25 → Economic inactivity → Population change, 2001 to 2021 → 2023 median house price → House-price growth, 2001 to 2023 → Employment change, 2015 to 2024.
Regional peer
Population aged 65 or over: 10.4% · Aylesbury delta -2.1 pp
Population aged 65 or over is one of Slough's three furthest-from-middle observations: 10.4%, percentile 1.4, lowest decile. The constrained regional comparison is Aylesbury (E63011452). On this measure, Slough minus that record is -2.1 pp; the selection basis is nearest complete record in south east. Treat this combination as a hypothesis about readability, keyboard access and assisted alternatives, and test it through inclusive usability sessions and accessibility conformance checks. The boundary is important: an age-group share does not determine digital ability.
Classification peer
2021 population: 166,868 · Colchester delta +36,472 people
The reviewed record positions Slough at percentile 96.5 for 2021 population; its published value is 166,868 and its band is highest decile. Using Colchester as the classification peer, the profile-minus-peer delta is +36,472 people; the peer was selected because nearest complete record outside south east with the same ons combined classification. Its practical use is to frame—not answer—a question about content hierarchy and service-capacity assumptions; the next evidence should come from task-frequency interviews and observed completion data. It must not be over-read, because population size does not establish addressable demand.
National peer
Population aged under 25: 35% · Cambridge (Cambridge) delta -0.2 pp
For population aged under 25, the source reports 35% for Slough. That sits in the highest decile, 45.7 percentile points from the middle position. Using Cambridge (Cambridge) as the national peer, the profile-minus-peer delta is -0.2 pp; the peer was selected because nearest remaining complete england record. A defensible brief can turn the pair into a verification task for mobile task speed, privacy explanation and channel continuity, using cross-device usability sessions without age-based assumptions before changing the information architecture. The responsible interpretation stops short of intent: an age-group share does not determine channel preference.
This synthesis gives Slough a bounded evidence trail: three furthest-from-middle measures, three named peers and the large, non-coastal, working built-up area, nearer to a major town or city classification. The combination is useful for deciding what to investigate, not for predicting enquiries. A website brief should preserve the source dates, validation method and reasons for accepting or rejecting each hypothesis.
06 / Evidence interpretation
Planning signals before design decisions
Population context: 166,868 people in 2021
Slough's recorded population changed from 127,166 in 2001 to 166,868 in 2021 (+31.2%). This historical direction can inform content governance and capacity planning, but it is not a forecast and does not establish demand for a particular service.
Audience context: 10.4% aged 65 or over
The 2021 age-group series records 41,061 people aged 0 to 15, 17,309 aged 16 to 24, 91,140 aged 25 to 64 and 17,346 aged 65 or over. Small differences from the headline population reflect the published source series; percentages here use the age-group total and should guide testing questions, not stereotypes.
Activity context: 33.4% economically inactive
ONS records economic inactivity at 33.4%. The published composition includes 12.3% retired, 3% long-term sick or disabled, 6% students and 7.7% looking after home or family. These categories support inclusive task design; they do not identify individual users or purchasing intent.
Economic context: £390,000 median house price in 2023
The median house-price series moved from £115,000 in 2001 to £360,000 in 2021 and £390,000 in 2023, a published change of +239.1%. It is contextual evidence only—not a current affordability, revenue or customer-value estimate.
07 / Independent question set
Questions this evidence cannot answer on its own
These questions convert the profile-specific observations into falsifiable discovery work. They are not recommendations to create a service, location or page, and each needs direct user or behavioural evidence before it changes a website brief.
- 01
Before prioritising readability, keyboard access and assisted alternatives, which part of inclusive usability sessions and accessibility conformance checks would verify whether this population aged 65 or over observation matters to users in Slough?
Evidence basis: 10.4%, lowest decile, with Slough minus the regional peer equal to -2.1 pp. Validation route: inclusive usability sessions and accessibility conformance checks.
- 02
Before prioritising content hierarchy and service-capacity assumptions, which part of task-frequency interviews and observed completion data would verify whether this 2021 population observation matters to users in Slough?
Evidence basis: 166,868, highest decile, with Slough minus the classification peer equal to +36,472 people. Validation route: task-frequency interviews and observed completion data.
- 03
Where should the team record uncertainty when using Slough's population aged under 25 value and the Cambridge (Cambridge) comparison to discuss mobile task speed, privacy explanation and channel continuity?
This question is traceable to population aged under 25 at percentile 95.7 and a -0.2 pp profile-minus-peer difference, not to inferred local behaviour.
- 04
For Slough's large, non-coastal, working built-up area, nearer to a major town or city classification, how should population aged 65 or over, 2021 population, population aged under 25 be tested as separate website hypotheses without turning the combined pattern into a claim about local demand?
Cross-check all three named comparisons—Aylesbury, Colchester, Cambridge (Cambridge)—and define a user-research or behavioural measure for each question before changing navigation, page scope or conversion paths. The observations share one source but do not demonstrate causation.
08 / Practical brief
Website-planning recommendations for this evidence pattern
- 01
Separate employer and customer journeys
Slough is classified as a working town. A useful website brief should separate recruitment, procurement and customer tasks, then give each journey its own proof, contact route and success measure instead of forcing every visitor through one generic enquiry page.
- 02
Differentiate from the nearby major centre
Slough is nearer to a major town or city. Use specific offer boundaries, proof and response expectations to explain why the organisation is relevant; do not rely on a place-name heading or create a doorway that simply redirects users to a national service page.
- 03
Support quick comparison without hiding detail
35% of the recorded 2021 age-group total is under 25. Lead with concise task summaries and responsive performance, while keeping fees, eligibility, privacy and next steps available in the same journey rather than behind a social-only channel.
- 04
Prepare the content model for change
Slough recorded +31.2% population change from 2001 to 2021 and +2.7% employment change from 2015 to 2024. Use owned templates, update dates, accountable content roles and measurable conversion events so the site can evolve without publishing unreviewed route permutations.
09 / Method and limits
What this profile can—and cannot—support
This is a Mosalio editorial interpretation of the ONS May 2026 dataset for BUA24 code E63012046. The source periods differ by metric; values are historical, not live. The profile deliberately excludes ONS experimental visitor-to-resident fields and makes no claim about search volume, rankings, customers, a Mosalio office or physical delivery in Slough.
Mosalio does not claim an office, staff member, customer, or physical-delivery presence in Slough.
Source: Office for National Statistics, Understanding towns in England and Wales, investigating socioeconomic trends, released . This Mosalio interpretation was first published on and last reviewed on .
Contains public sector information licensed under the Open Government Licence v3.0.
How this page was made: Mosalio applies one documented, deterministic transform to the validated ONS record, calculates the displayed comparisons, and renders the result from source-controlled data. It is an automated public-data resource, not individually commissioned local market research. A portfolio-level editorial-value review checks every profile's source identity, distinctive metrics, peer evidence, synthesis and planning questions before index eligibility can be enabled.
Analysis basis: Midrank percentile across all accepted England records; a higher percentile means a higher published value, not a better outcome. Root-mean-square Euclidean distance across eight clipped robust z-scores; population and 2023 house price are log-transformed before median/MAD scaling.