Oxfordshire is a county in South East England, bordering on Warwickshire, Northamptonshire, Buckinghamshire, Berkshire, Wiltshire and Gloucestershire. The county has major education and tourist industries and a significant concentration of performance motorsport companies and facilities. Oxford University Press is the largest of many print and publishing firms; the University of Oxford is closely affiliated with the high concentration of local biotechnology companies. The largest centre of population is the city of Oxford. Other significant settlements include Banbury, Bicester, Kidlington, Chipping Norton, Carterton, Witney, Thame and Chinnor and Abingdon, Wantage, Didcot, Wallingford and Henley-on-Thames slightly further afield.