The University of Hertfordshire (informally Hertfordshire) is a public research university in Hertfordshire, England, United Kingdom. The university is based largely in Hatfield, Hertfordshire. Its antecedent institution, Hatfield Technical College, was founded in 1952 and was identified as one of 25 Colleges of Technology in the United Kingdom in 1959. In 1992, Hatfield Polytechnic was granted university status by the British government and subsequently renamed University of Hertfordshire. From the time it was awarded university status, Hertfordshire's enrolment has steadily increased. As of 2013, it has 25,130 students and 2,358 staff, 812 of which are academic members of staff. It has more than 5,200 international students and a global network of more than 160,000 alumni. Hertfordshire is a member of Association of Commonwealth Universities and University Alliance. The university has an annual turnover of £234m.