Competition: Porter's Five Forces (AQA A Level Business): Revision Note

Exam code: 7132

Lisa Eades

Written by: Lisa Eades

Reviewed by: Steve Vorster

Updated on

An introduction to Porter's Five Forces

  • Porter’s Five Forces identify the key pressures on an industry that impact the ability of a business to compete with rivals

  • It helps managers think strategically about the environment in which the business operates

Porter's Five Forces

Diagram of Porter's Five Forces model: central "Industry Rivalry" surrounded by "Threat of New Entry," "Supplier Power," "Buyer Power," and "Threat of Substitution."
Porter’s Five Forces model identifies the main competitive pressures on a business within an industry
  •  Porter argued that once a business fully understands these pressures in their context, they can take strategic decisions to achieve and sustain a  competitive advantage

Entry threat

  • If new competitors can enter an industry quickly and without investing a lot of money, then the barriers to entry is low and the threat of new entrants is high

    • The market is likely to contain a large number of rival businesses

    • Individual businesses are likely to have little power

  • Where the barriers to entry are too high for new businesses to gain a foothold and compete in the market, the threat of new entrants is low 

Buyer power

  • When a business sells to a small number of customers, those customers have significant power to negotiate lower prices 

    • The business has few options when it comes to customers

    • It will have to price and sell products according to customer demands

  • Where a business has a high number of customers, those customers have less power

    • It is likely to be able to charge a high price for a product that is relatively inexpensive to produce

Supplier power

  • Where a business has a lot of choices over the suppliers from which it buys components

    • It is likely to be able to shop around for lower price

  • Where a supplier has significant power over a business as a result of offering a specialised component or where there are a small number of suppliers in the market

    • The business has little choice over the source of its suppliers

    • It is likely to have to pay high prices for its components and accept suppliers’ terms and conditions

Rivalry

  • When there are many competitors selling similar products, the business will have little power

    • Many rivals are trying to get a more significant share of the market

    • Customers have a lot of choices and can shop around

  • When a business offers products in an industry with little or no competition, it has more power, can use premium pricing and dominate the market 

Threat of substitutes

  • Where customers can easily swap a businesses products for those of a rival, the business has little power

    • The business is likely to have to compete on price or invest heavily in developing a USP

  • Where substitution is unlikely, a business has significant market power

    • It is likely to be able to charge a high price for its products and may be less inclined to innovate

Porter's Five Forces and competitive strategy

  • Managers can use Porter’s Five Forces to shape their competitive strategy

Using the Five Forces model

Force

Explanation

Example

Threat of new entrants

  • Companies raise barriers to stop new rivals by investing in patents, large-scale production or strong brands so it’s expensive for others to start up

  • Drug companies like GlaxoSmithKline spend heavily on research and hold long patent protections

  • These measures can keep new competitors out of the market for years

Bargaining power of buyers

  • When customers can demand lower prices, firms make their products stand out or lock customers in with loyalty programmes to keep prices stable

  • Apple’s iPhone range, including its App Store, iMessage and accessories, makes it hard and costly for users to switch to another brand

Bargaining power of suppliers

  • If few suppliers control important inputs, businesses use multiple suppliers, make their own parts, or sign long contracts to secure better terms

  • Supermarkets like Tesco and Sainsburys sell own-brand foods to reduce reliance on big suppliers such as Nestlé or Unilever and negotiate lower prices

Threat of substitutes

  • When other products meet the same need, firms add unique features, bundle services or improve convenience to encourage customers to remain loyal

  • Cinema chain Vue offers luxury recliner seats, gourmet snacks and membership plans so visiting is more exciting and social than watching films at home on streaming services

Competitive rivalry among firms

  • In highly competitive markets, companies choose to be the lowest-cost producer or differentiate on quality and service to attract customers

  • Ryanair competes on being the cheapest airline in Europe, while British Airways focuses on premium cabins, lounges and frequent-flyer benefits

Examiner Tips and Tricks

When supplier power rises or rivalry intensifies, show how this squeezes margins, then suggest a defence (e.g., differentiation) for evaluation

Balancing threat with strategy helps you achieve better analysis marks

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Lisa Eades

Author: Lisa Eades

Expertise: Business Content Creator

Lisa has taught A Level, GCSE, BTEC and IBDP Business for over 20 years and is a senior Examiner for Edexcel. Lisa has been a successful Head of Department in Kent and has offered private Business tuition to students across the UK. Lisa loves to create imaginative and accessible resources which engage learners and build their passion for the subject.

Steve Vorster

Reviewer: Steve Vorster

Expertise: Economics & Business Subject Lead

Steve has taught A Level, GCSE, IGCSE Business and Economics - as well as IBDP Economics and Business Management. He is an IBDP Examiner and IGCSE textbook author. His students regularly achieve 90-100% in their final exams. Steve has been the Assistant Head of Sixth Form for a school in Devon, and Head of Economics at the world's largest International school in Singapore. He loves to create resources which speed up student learning and are easily accessible by all.