Worcestershire schools in the county provide Sixth-form education including two in the city of Worcester. Several vocational colleges provide GCSE and A-level courses and adult education, such as South Worcestershire College, and an agricultural campus of Warwickshire College in Pershore. There is also the University of Worcester, which is located in the city itself and is home to the National Pollen and Aerobiology Research Unit and five other national research centres. The county town and only city is Worcester. The other major settlements, Kidderminster, Bromsgrove and Redditch are satellite towns of Birmingham. There are also several market towns: Malvern, Bewdley, Evesham,
Economics of English towns and trade in the Middle Ages the 12th century onwards, many English towns acquired a charter from the Crown allowing them to hold an annual fair, usually serving a regional or local customer base and lasting for two or three days. The practice increased in the next century and over 2,200 charters were issued to markets and fairs by English kings between 1200 and 1270. Fairs grew in popularity as the international wool trade increased: the fairs allowed English wool producers and ports on the east coast to engage with visiting foreign merchants, circumnavigating those English merchants in London keen to make a profit as middlemen.