South Yorkshire Transport (SYT) was formed in 1986, as a result of deregulation of bus services in the UK. The South Yorkshire PTE was no longer allowed to operate buses itself, so an arms length operating company was created. SYT operated buses in and around Doncaster, Rotherham and Sheffield with some services extending to Chesterfield, Leeds and Barnsley. Known locally as 'one man buses', the company had by now dispensed with conductors and become driver operated vehicles. SYT was eventually privatised, being sold to its employees in 1993, and it became Mainline Group Limited.