Surrey
Surrey's most significant source of prosperity in the later Middle Ages was the production of woollen cloth, which emerged during that period as England's main export industry. The county was an early centre of English textile manufacturing, benefiting from the presence of deposits of fuller's earth, the rare mineral composite important in the process of finishing cloth, around Reigate and Nutfield. The industry in Surrey was focused on Guildford, which gave its name to a variety of cloth, "gilforte", which was exported widely across Europe and the Middle East and imitated by manufacturers elsewhere in Europe. However, as the English cloth industry expanded, Surrey was outstripped by other growing regions of production.
Though Surrey was not the scene of serious fighting in the various rebellions and civil wars of the period, armies from Kent heading for London via Southwark passed through what were then the extreme north-eastern fringes of Surrey during the Peasants' Revolt of 1381 and Cade's Rebellion in 1450, and at various stages of the Wars of the Roses in 1460, 1469 and 1471. The upheaval of 1381 also involved widespread local unrest in Surrey, as was the case all across south-eastern England, and some recruits from Surrey joined the Kentish rebel army.
Surrey
Southwark expanded rapidly in this period, and by 1600, if considered as a separate entity, it was the second-largest urban area in England, behind only London itself. Parts of it were outside the jurisdiction of the government of the City of London, and as a result the area of Bankside became London's principal entertainment district, since the social control exercised there by the local authorities of Surrey was less effective and restrictive than that of the City authorities. Bankside was the scene of the golden age of Elizabethan and Jacobean theatre, with the work of playwrights including William Shakespeare, Christopher Marlowe, Ben Jonson and John Webster performed in its playhouses. The leading actor and impresario Edward Alleyn founded a college in Dulwich with an endowment including an art collection, which was later expanded and opened to the public in 1817, becoming Britain's first public art gallery.
Surrey almost entirely escaped the direct impact of fighting during the main phase of the English Civil War in 1642-6. The local Parliamentarian gentry led by Sir Richard Onslow were able to secure the county without difficulty on the outbreak of war. Farnham Castle was briefly occupied by the advancing Royalists in late 1642, but was easily stormed by the Parliamentarians under Sir William Waller. A new Royalist offensive in late 1643 saw skirmishing around Farnham between Waller's forces and Ralph Hopton's Royalists, but these brief incursions into the western fringes of Surrey marked the limits of Royalist advances on the county. At the end of 1643 Surrey combined with Kent, Sussex and Hampshire to form the South-Eastern Association, a military federation modelled on Parliament's existing Eastern Association.