Why and how do businesses grow, and how is the scale of a business measured?
Business growth and the scales of business activity: why businesses grow, internal (organic) and external growth including mergers and takeovers, the difference between local, national and multinational businesses, and the advantages and disadvantages of growing larger.
A focused answer to the WJEC GCSE Business content on business growth and scale, covering why businesses grow, internal (organic) and external growth such as mergers and takeovers, local, national and multinational businesses, and the pros and cons of getting bigger.
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What this dot point is asking
WJEC wants you to understand business growth and the scale of business activity. You need why businesses grow, the two types of growth (internal/organic and external through mergers and takeovers), the difference between local, national and multinational businesses, and the advantages and disadvantages of getting larger, including the idea of economies and diseconomies of scale. This topic ties together ownership, aims and the move towards globalisation.
Why businesses grow
Growth is a common aim once a business has survived its early years.
Internal and external growth
The scales of business activity
Advantages and disadvantages of growing larger
Why this matters
Growth links ownership (firms often change form, for example sole trader to Ltd to plc, as they expand), aims (growth and market share are key aims), and the wider economy (multinationals drive globalisation and international trade). The idea of economies and diseconomies of scale reappears in operations and finance. Exam questions usually ask you to recommend a growth method or judge whether growth is worth it, where speed, risk, cost and control are the deciding points.
Try this
Q1. State one reason a business might want to grow. [1 mark]
- Cue. Any one of: to increase profit or sales, win market share, reach more customers, or lower costs through economies of scale.
Q2. Explain one disadvantage of a business growing too large. [2 marks]
- Cue. It can become hard to manage and control, leading to slower decisions and communication problems, which can raise costs (diseconomies of scale) and worsen customer service.
Exam-style practice questions
Practice questions written in the style of WJEC exam questions on this dot point, with worked answer explainers. The year tag is the paper they imitate, not the source.
WJEC (Unit 1)3 marksExplain the difference between internal (organic) growth and external growth.Show worked answer →
A 3-mark AO1 explain question. Reward a clear contrast with development.
Internal (organic) growth is when a business grows by expanding its own operations, for example by opening new branches, launching new products or selling to new markets, using its own resources. It tends to be slower but lower risk.
External growth is when a business grows by joining with another business, through a merger (two firms agree to combine) or a takeover (one firm buys another). It is faster but higher risk and more expensive. Markers reward the definition of each type plus the key contrast of speed and risk.
WJEC (Unit 1)6 marksAnalyse the advantages and disadvantages to a business of growing larger.Show worked answer →
A 6-mark AO1 and AO3 analyse question. Reward developed points on both sides.
Advantage: a larger business can buy in bulk and spread its costs over more output, lowering the average cost per unit (economies of scale), and it can reach more customers and become better known, raising sales and profit.
Disadvantage: a larger business can become harder to manage and control, with slower decisions, communication problems and less personal customer service, which can raise costs and harm quality (diseconomies of scale).
Chain and judgement: growth brings lower unit costs and bigger sales but risks poorer control and service, so the benefit depends on whether the business can manage its larger size well. Markers reward developed advantages and disadvantages plus a balanced comment.
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Sources & how we know this
- WJEC GCSE Business specification (Wales) — WJEC (2025)
- WJEC GCSE Business (Wales) specification (3510) — WJEC (2017)