AQA GCSE Economics: International trade, the UK and exchange rates (8136)

Countries trade because no country can produce everything it needs as efficiently as others can, so specialising and exchanging lets them consume more. An exchange rate is the price of one currency in terms of another, and it is set by the demand for and supply of the currency. AQA GCSE Economics (8136) sections 3.2.4.1 and 3.2.4.2 ask you to explain the benefits of trade, describe the UK’s main exports and imports, explain interdependence, and show how exchange rates are determined and how a change affects consumers and producers.

Both sections are in 3.2 How the economy works, assessed on Paper 2, with no tiers. Numbers are invented unless a real UK fact is stated. Pair this guide with the revision notes and the practice questions. Free trade and globalisation are in the free trade and globalisation guide, and the current account in the balance of payments guide. Course links: AQA GCSE Economics hub, checklist and free diagnostics.

Syllabus coverage

Specification point	What you must be able to do
3.2.4.1 Benefits of trade	Explain the importance of trade to economies and the advantages of trade
3.2.4.1 UK exports and imports	Describe the main types of exports from, and imports to, the UK economy
3.2.4.1 Interdependence	Explain the consequences of global interdependence for the UK economy
3.2.4.2 Determination	Explain how exchange rates are determined through the interaction of demand and supply
3.2.4.2 Effects	Explain the effects of changes in the exchange rate on consumers and producers

Why do countries trade?

• Access to goods and resources: some goods cannot be produced at home, such as tropical fruit in the UK, or some raw materials.
• Specialisation: countries concentrate on what they produce best and trade for the rest, so total output rises.
• Lower prices and more choice: competition from imports keeps prices down and widens the range on offer.
• Bigger markets for firms: exporting lets firms sell to more customers, grow and benefit from producing on a larger scale.
• Jobs and growth: export industries create employment and income.

What does the UK export and import?

The UK is a major exporter of services, such as financial services, insurance, business services, education and tourism. It also exports goods such as cars, machinery and medicines. It imports goods such as machinery, vehicles, fuels, food and clothing. In recent decades the UK has tended to import more goods than it exports, while exporting more services than it imports.

What is global interdependence?

Interdependence means economies rely on each other for goods, services, markets and investment. For the UK this brings benefits, such as cheaper imports and large export markets, but also risks:

• a recession abroad reduces demand for UK exports, which can cost UK jobs;
• disruption to supply chains or a rise in world energy prices can push up UK prices;
• UK firms face strong competition from abroad, and uncompetitive firms may close.

How are exchange rates determined?

In a floating system the exchange rate is set where the demand for a currency equals its supply.

Demand for pounds comes from people abroad who want to buy UK exports, visit the UK, or invest in the UK (for example, saving in UK banks when UK interest rates are high).

Supply of pounds comes from UK residents who want to buy imports, holiday abroad, or invest overseas; they sell pounds to buy foreign currency.

Change	Effect on the pound
More demand for UK exports	Demand for pounds rises, so the pound appreciates (rises)
UK interest rates rise relative to other countries	Saving in the UK becomes more attractive, demand for pounds rises, so the pound appreciates
UK consumers buy more imports	Supply of pounds rises, so the pound depreciates (falls)

Worked example: converting prices (illustrative)

The exchange rate falls from £1 = $1.40 to £1 = $1.20.

• A UK jacket priced at £50 costs a US buyer 50 × 1.40 = $70 before, and 50 × 1.20 = $60 after. UK exports become cheaper abroad.
• A US laptop priced at $600 costs a UK buyer 600 ÷ 1.40 = £428.57 before, and 600 ÷ 1.20 = £500 after. Imports become dearer in the UK.

How do exchange-rate changes affect consumers and producers?

Use the SPICED rule: Strong Pound, Imports Cheap, Exports Dear.

	Pound appreciates (strong)	Pound depreciates (weak)
UK consumers	Imports and foreign holidays are cheaper	Imports and foreign holidays cost more; prices may rise
UK exporters	Exports are dearer abroad, so sales may fall	Exports are cheaper abroad, so sales may rise
UK firms using imported materials	Costs fall	Costs rise, which may be passed on as higher prices

The overall effect depends on how much buyers respond to the price change and on whether firms are exporters, importers or both.

Common errors

• Saying a stronger pound helps exporters; it makes exports dearer abroad.
• Multiplying when you should divide in a currency conversion. Check whether the answer should be in pounds or the foreign currency.
• Forgetting that interest rates affect demand for a currency.
• Describing interdependence only as a benefit.

Frequently asked questions

What does it mean if the pound appreciates? One pound buys more foreign currency than before, so UK exports become dearer abroad and imports become cheaper in the UK.

Why does a rise in UK interest rates strengthen the pound? Savers abroad want to earn the higher return, so they buy pounds to deposit in UK banks, raising demand for the currency.

Is a weak pound good for the UK? It helps exporters and can protect jobs in export industries, but it makes imports dearer, which can raise inflation and hurt consumers.

What are the UK’s main exports? Services such as financial and business services are the largest, alongside goods such as cars, machinery and medicines.

Official syllabus

AQA GCSE Economics (8136) specification, for first teaching from September 2017, published by AQA: sections 3.2.4.1 Why countries trade and the importance of international trade to the UK and 3.2.4.2 Exchange rates.