International trade

What is International Trade?

International trade is the exchange of goods and services between countries — exports (goods and services sold abroad) and imports (goods and services purchased from abroad). Trade enables countries to consume goods and services they do not produce domestically.

Benefits of International Trade

• Greater variety — consumers can access goods not produced domestically (tropical fruits, specific technologies, luxury goods).
• Lower prices — importing from countries that produce more cheaply keeps prices lower for consumers. Competition from imports also pressures domestic producers to reduce costs.
• Economies of scale — producing for a global market rather than just the domestic market allows firms to achieve greater economies of scale, reducing average costs.
• Specialisation — countries focus on producing what they do relatively best (comparative advantage), increasing overall global efficiency and output.
• Access to larger markets — exporting gives firms revenue beyond domestic demand, enabling growth and investment.
• Technology transfer — trade facilitates the spread of new technologies and best practices across countries.

Comparative Advantage

The theory of comparative advantage (developed by David Ricardo) states that countries should specialise in producing goods in which they have the lowest opportunity cost — even if one country is better at producing everything, both countries benefit from trade if each specialises in their relative strength.

Example: if the UK can produce 10 cars or 5 aeroplanes per unit of resources, and Germany can produce 8 cars or 6 aeroplanes, Germany has a comparative advantage in aeroplanes (lower opportunity cost: sacrifices fewer cars per aeroplane) and the UK in cars. Both gain from the UK specialising in cars and Germany in aeroplanes and trading with each other.

Comparative advantage explains why even less productive countries can benefit from participating in international trade.

Pattern of UK Trade

Main UK exports: financial and business services; pharmaceuticals; machinery and equipment; cars (Jaguar Land Rover, Rolls-Royce); aerospace (Airbus components, Rolls-Royce engines); whisky and other food and drink; education and tourism.

Main UK imports: machinery and transport equipment; oil and gas; food and beverages; clothing; electronics and consumer goods.

UK trade partners: the European Union remains the UK's largest trading partner despite Brexit. The US is the UK's largest single-country trading partner for goods and services combined. Asia (China, India) is of growing importance.

The UK typically runs a surplus on services (especially financial services) and a deficit on goods — producing an overall current account deficit in most years.