Black markets trade in illegal goods and services, legal goods and services to avoid taxes, or both. Examples of black markets include the sale of illegal drugs, weapons, human trafficking ...

Businesses sell all sorts of different good and services. Examples of goods include food, cars, TVs and mobile phones. Examples of services include trains, taxi rides, broadband, Wi-Fi and haircuts.

Examples of public sector services include education, emergency services and medical care. In the UK, most of the goods and services available are provided by private sector businesses.