UK population: distribution, structure and change
OCR J383 Paper 1 tests UK population with questions on the demographic transition, ageing population challenges and the factors that shape population distribution. Expect 4-mark describe and 6-mark explain questions.
Population distribution
The UK has a population of approximately 67 million people (2023 census).
Uneven distribution: population is heavily concentrated in certain areas.
- Most densely populated: London (5,700/km2), West Midlands, Greater Manchester, West Yorkshire.
- Least densely populated: Scottish Highlands (~9/km2), Northumberland, mid-Wales, rural Lincolnshire.
Factors affecting distribution:
| Factor | Effect |
|---|---|
| Physical: flat land | Easier to build; better for farming; more accessible |
| Physical: mild climate | More pleasant; longer growing seasons |
| Physical: river valleys | Historical settlement sites; water supply; trade |
| Physical: upland/mountainous | Fewer settlements; harder terrain; limited farming |
| Human: industrial history | Legacy of 19th-century coal, textile, steel industries in Yorkshire, South Wales, NE England |
| Human: capital city effect | London's political, financial, cultural dominance draws migration |
| Human: transport nodes | London, Manchester, Leeds — intersections of rail/road networks |
Population change
Natural change
- Natural increase = birth rate − death rate.
- UK birth rate: ~10 per 1,000 (2022).
- UK death rate: ~10 per 1,000 (2022).
- UK natural increase: effectively at replacement level.
Migration
- Net migration is the primary driver of UK population growth since the 1990s.
- 2022/23: estimated net migration of ~750,000 — the highest ever recorded.
- In-migrants: international students, healthcare workers (NHS), EU free movement (pre-Brexit), asylum seekers, refugees.
- Internal migration: movement from rural areas to cities; North-South divide; counterurbanisation (wealthy leaving cities for countryside/coast).
Demographic Transition Model (DTM)
The UK is in Stage 4 (low stationary / declining):
- Low birth rate, low death rate.
- Slow natural growth; overall population growth dependent on net migration.
- Stage 5 would be natural decrease (more deaths than births) — possible for UK without migration.
Age-sex population pyramids
UK 2023 pyramid shape: near-cylindrical (wide at middle ages; narrower at top and base).
- Large cohort of "baby boomers" (born 1946–64) now aged 59–77 — becoming the elderly dependent population.
- Small cohort of 0–14 year olds (declining birth rate).
- Wider middle sections (working-age population maintained by migration).
Ageing population
The UK's average age is increasing:
- Median age: 40.7 years (2021 Census).
- Over-65s: 10.9 million (19% of population) — projected 24% by 2042.
- Over-85s (fastest-growing age group): 1.6 million; projected 3.2 million by 2040.
Causes of ageing population
- Increasing life expectancy: UK average life expectancy 81 years (2023); improved medicine, diet, working conditions.
- Declining birth rate: from 2.4 children/woman in 1964 to 1.5 in 2022 (below replacement level of 2.1).
- Ageing of the baby-boom generation: the post-WWII baby boom cohort is now elderly.
Challenges of an ageing population
| Challenge | Detail |
|---|---|
| NHS pressure | Older people use disproportionately more healthcare — over-65s account for ~40% of all hospital bed-days |
| Social care crisis | Demand for care homes and home care rising; funding crisis; 165,000 care vacancies (2023) |
| Pension costs | State Pension costs rising; pension age increased to 67 (phased in); triple lock (rises with highest of CPI/earnings/2.5%) costs ~£100bn/year |
| Dependency ratio | More dependents (young + old) per working-age person → tax burden on the working population increases |
| Workforce shortages | Smaller working-age population relative to those needing support |
Opportunities of an ageing population
- "Grey economy": older people (many with occupational pensions + housing equity) are significant consumers → tourism, leisure, healthcare industries.
- Volunteering: retired people provide huge voluntary sector support — 40% of UK volunteers are over 50.
- Grandparent childcare: saves UK parents ~£28 billion/year in childcare costs.
Government responses
- Raising state pension age (67 by 2028; 68 by 2044).
- Encouraging older workers to remain employed (age discrimination law; flexible working).
- Migrant workers fill care/NHS vacancies.
- Savings incentives (ISAs, auto-enrolment in workplace pensions since 2012).
Common OCR exam mistakes
- Saying an ageing population is "bad" without balance — OCR rewards recognition of the grey economy and voluntary contributions.
- Confusing birth rate and fertility rate — birth rate is per 1,000 population; total fertility rate (TFR) is children per woman.
- Forgetting migration as the primary cause of UK population growth — natural increase is near zero; net migration is the key driver.
- Drawing a population pyramid without labelling axes — always include male/female, age groups and percentages/numbers.
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