Dundee is a regional employment and education centre, with around 325,000 people within 30 minutes' drive of the city centre and 860,000 people within one hour. Many people from North East Fife, Angus and Perth and Kinross commute to the city. As of 2015, there were 395 employers who employed 250 or more staff; over a five-year period (2011–2015) the number of registered enterprises in Dundee increased by 20.9% from 2,655 to 3,210. The largest employers in the city are NHS Tayside, Dundee City Council, University of Dundee, Tayside Contracts, Tesco, D. C. Thomson & Co and BT.