Section 1.2 📝 Revision Notes

Classification
of Businesses

Primary, secondary and tertiary sectors, the chain of production, structural change, and the difference between private sector and public sector organisations.

4 Key Topics

11 Self-Test Qs

⭐⭐ Exam Frequency

📖 Reading Progress

📖 Click any section to open it and start revising.

Classification of Business Activity

Businesses are classified into three sectors based on the type of economic activity they carry out — primary, secondary or tertiary. This classification helps us understand what a business does and its role in the economy.

💡 Click Each Sector to Explore It

Click any sector card to reveal its full definition, examples and exam tip.

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Primary Sector

Extracting natural resources

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Primary Sector

Businesses that extract or harvest natural resources directly from the earth, sea or air. The output is a raw material that other businesses use.

Farming (wheat, rice, vegetables)
Mining (coal, gold, iron ore)
Fishing and forestry
Oil and gas extraction
Quarrying (limestone, granite)

📌 Dominant in developing economies; shrinking share in developed ones.

🏭

Secondary Sector

Manufacturing & construction

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Secondary Sector

Businesses that process or manufacture raw materials into finished or semi-finished goods. Also includes construction.

Car manufacturing
Steel production (from iron ore)
Bread baking (from wheat flour)
House building and construction
Furniture and clothing manufacturing

📌 Transforms raw materials — adds significant value at this stage.

🛎️

Tertiary Sector

Services to businesses & consumers

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Tertiary Sector

Businesses that provide services rather than physical goods — to individuals, other businesses or the government.

Retail shops and supermarkets
Banking and insurance
Education and healthcare
Transport and logistics
Tourism, hospitality and entertainment

📌 Dominant in developed economies — largest employer in most countries.

Quick Check — Which Sector?

Click each card to reveal its sector.

Fishing company

Car factory

Bank

Coal mine

Construction firm

School

Wheat farm

Airline

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Exam watch: Some businesses can span two sectors. A timber company that both chops trees (primary) and makes furniture (secondary) spans both — always look at the business’s main activity when classifying it.

Chain of Production

The sequence of stages that a product passes through from raw material extraction to reaching the final consumer. Each stage adds value to the product — this is called added value.

Click each stage to see what happens and how value is added at that point.

Primary

🌾 Raw material

→

Secondary

🏭 Manufacture

→

Tertiary

🛎️ Service

→

👤

Consumer

Final buyer

📋 Example — From Wheat to Bread on the Shelf

Stage	Sector	Activity	Value Added
1	Primary	Farmer grows and harvests wheat	Raw material created from land and labour
2	Secondary	Mill grinds wheat into flour; bakery bakes loaves	Raw material transformed into a usable finished good
3	Tertiary	Supermarket sells bread to customers; delivery company transports it	Good made available and convenient for the consumer

Added Value — Key Concept

Added Value = Selling price − Cost of bought-in materials and services
Each stage of the chain adds value — the final price to the consumer is much higher than the original raw material cost
Businesses compete on how much value they can add at their stage
More added value = higher profit margin potential

📌

Exam tip: The chain of production shows interdependence — each sector depends on the others. If the primary sector fails (e.g. bad harvest), the secondary sector cannot manufacture, and the tertiary sector has nothing to sell.

Over time, the relative importance of each sector changes — this is called structural change. In developed economies (e.g. UK, USA), the tertiary sector dominates. In developing economies, the primary sector is still large.

Economy Type	Dominant Sector	Examples	Why?
Developing	Primary — farming, mining, fishing	Sub-Saharan Africa, parts of South Asia	Less industrialisation; most workers in agriculture
Emerging	Secondary — manufacturing growing fast	China (1980s–2000s), Vietnam, Bangladesh	Industrialisation and foreign investment drive growth
Developed	Tertiary — services dominate	UK, USA, Germany, Singapore	Deindustrialisation; technology and services expand

Why Does the Tertiary Sector Grow in Developed Economies?

Key Reasons for Tertiary Sector Growth

Rising incomes: Wealthier consumers demand more services — restaurants, travel, entertainment, financial services
Technology: Automation has replaced many manufacturing jobs; technology itself creates new service industries (IT support, software, streaming)
Deindustrialisation: Manufacturing has moved to lower-cost countries (offshoring), reducing the secondary sector in developed economies
Ageing population: Older populations demand more healthcare, financial planning and personal care services
Globalisation: Countries can import manufactured goods cheaply and specialise in high-value services instead

🎯 Activity — Identify the Sector Change

Scenario

In 1960, the UK had 8 million manufacturing workers. By 2020 this had fallen to under 3 million. Over the same period, the number of workers in financial services, healthcare and retail grew significantly. What is this process called?

📌

Key term — Deindustrialisation: The decline of the secondary (manufacturing) sector in a country, usually accompanied by growth in the tertiary sector. Common in developed economies from the 1970s onwards due to automation and offshoring.

All businesses and organisations can also be classified by who owns and controls them — the private sector (individuals and shareholders) or the public sector (the government).

🏢 Private Sector

Owned by private individuals or shareholders
Primary aim: profit
Funded by: owner investment, borrowing, revenue
Examples: Apple, Tesco, local restaurants, sole traders
Includes: sole traders, partnerships, Ltd, PLCs

🏛 Public Sector

Owned and operated by the government
Primary aim: provide services to citizens
Funded by: taxation and government borrowing
Examples: NHS, state schools, police, armed forces, public libraries
Not primarily motivated by profit

Privatisation and Nationalisation

Term	Definition	Direction	Example
Privatisation	Government transfers ownership of a public sector business to the private sector	Public → Private	UK selling British Telecom (1984); many rail companies
Nationalisation	Government takes ownership of a private sector business into the public sector	Private → Public	UK nationalising banks during 2008 financial crisis

Arguments For and Against Privatisation

✅ For Privatisation

Profit motive drives efficiency — lower costs
Competition improves quality and innovation
Government raises money from sale
Less government interference in business decisions

❌ Against Privatisation

Private firms may cut services that are unprofitable
Natural monopolies (e.g. water, rail) may exploit customers
Essential services should not prioritise profit over people
May lead to job losses to reduce costs

Quick Check — Private or Public Sector?

Click each card to reveal its sector classification.

National Health Service (NHS)

Apple Inc.

State primary school

Local restaurant

Police force

Tesco plc

📌

Key distinction: The private sector is motivated by profit; the public sector aims to provide services for all citizens funded by taxation. Public sector organisations do not need to make a profit — they are funded regardless. This is the most tested distinction in this subtopic.

Topic	Key Point
Primary Sector	Extracts raw materials from natural resources — farming, mining, fishing, forestry
Secondary Sector	Manufactures or constructs — transforms raw materials into finished goods
Tertiary Sector	Provides services — retail, banking, education, transport, healthcare
Chain of Production	Sequence from raw material → manufacture → service → consumer; each stage adds value
Added Value	Selling price minus cost of bought-in materials — each stage adds value to the product
Deindustrialisation	Decline of secondary sector in developed economies; tertiary sector grows to replace it
Structural Change	Shift in the relative importance of sectors over time as economies develop
Private Sector	Owned by individuals/shareholders; primary aim is profit
Public Sector	Owned by government; primary aim is to provide services funded by taxation
Privatisation	Transferring a public sector business to private ownership
Nationalisation	Government taking a private sector business into public ownership

Three Sectors

Primary = extract. Secondary = manufacture. Tertiary = services. Each builds on the previous stage.

Chain of Production

Raw material → manufacture → service → consumer. Every stage adds value to the final product.

Deindustrialisation

In developed economies, manufacturing declines as automation and offshoring shift work to services.

Private vs Public

Private = profit motive. Public = government-owned, service to citizens, funded by tax.

Privatisation

Public → Private. More efficiency and profit motive. Risk: cuts to unprofitable but essential services.

Exam technique

Always give a specific example when classifying a sector — never just state the sector name without justifying it.

🎯

Top 4 Exam Tips: (1) Primary = extract, Secondary = manufacture, Tertiary = service — learn a clear example for each. (2) Chain of production shows interdependence — all three sectors depend on each other. (3) Tertiary sector grows in developed economies due to rising incomes, technology and deindustrialisation. (4) Private sector = profit; public sector = services funded by tax — the most tested distinction.

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