Stephen Vickers took up the position of NEBOSH Chief Executive in April 2000. Six months later the Qualifications and Curriculum Authority (QCA) - now The Office of the Qualifications and Examinations Regulator (Ofqual) accredited NEBOSH as an awarding body. In March 2001, designatory letters were introduced for holders of NEBOSH higher level awards. In September 2001, almost 22 years after the formation of NEBOSH, Dolores Lavander of West Midlands Fire Service (WMFS) became the 50,000th NEBOSH examination candidate. A presentation to mark the occasion was held at WMFS headquarters. Two new qualifications, the NEBOSH Fire Certificate and NEBOSH International General Certificate were launched in March 2005. Current NEBOSH Chief Executive, Teresa Budworth, took up her role in March 2006. Two months later the first ever NEBOSH Graduation Ceremony took place at the University of Warwick . A further landmark was achieved in June 2006 when the 100,000th NEBOSH General Certificate was awarded to David Marsh. In October 2006, NEBOSH moved offices to its current location of 5 Dominus Way, Meridian Business Park, Leicester. The new building was formally opened by the then Secretary of State for Health, Patricia Hewitt ). The NEBOSH Specialist Environmental Diploma was revised and renamed the NEBOSH Diploma in Environmental Management in September 2008. Those holding this qualification could now apply for membership of the Institute of Environmental Management and Assessment (IEMA). In 2009, NEBOSH introduced two new qualifications - the NEBOSH International Diploma and the NEBOSH Environmental Certificate. In 2010, four more qualifications were launched - the NEBOSH Award in Health and Safety at Work, the NEBOSH Health and Well-being Certificate, the NEBOSH International Construction Certificate and the NEBOSH International Technical Certificate in Oil and Gas Operational Safety.