Sizeable businesses are now based in the Chelmsford Business Park at Boreham housing companies such as the Anderson Group and Global Marine Systems. The city also has a low unemployment rate (1.6% in 2002) and a well-educated workforce, with 9% holding a degree or above (in 2002; British average: 7.1%). Chelmsford has a vibrant nightlife scene with many nightclubs, pubs, wine bars and restaurants in the city centre area, particularly in Duke Street, Moulsham Street, the city centre end of Baddow Road and the bottom section of Springfield Road. Its central Essex location and good public transport links make the city ideal for revellers, commuters and tourists to visit from surrounding areas. In 1899, Guglielmo Marconi opened the world's first "wireless" factory under the name 'The Marconi Wireless Telegraph & Signal Company' in Hall Street, employing around 50 people. The company was later called the Marconi Wireless Telegraph Company Ltd. For this reason Chelmsford is credited as the "birthplace of radio", and this phrase can be seen on administrative signs on major roads entering the city, although this statement is disputed. Marconi soon outgrew its Hall Street premises, and in June 1912 the company moved to the brand new purpose-built New Street Works. On 15 June 1920 the factory was the location of the first official publicised sound broadcast in the United Kingdom, featuring Dame Nellie Melba using two radio broadcasting masts. In 1922, the world's first "regular" wireless broadcasts for entertainment began from the Marconi laboratories at Writtle near Chelmsford – Call sign '2MT' in what was little more than a wooden hut. In 1999, Marconi's defence division, including the Chelmsford facilities, was purchased by British Aerospace to form BAE Systems. Two sites remain under BAE control; the Great Baddow site which is now BAE's Advanced Technology Centre and its Integrated Systems Technologies business at Glebe Road. The military and secure communications division of Marconi was merged into Selex Communications was based at the New Street factory however they vacated the site in April 2008 with the remaining operations moved to nearby Basildon. This brought to an end of more than 100 years of the Marconi name in Chelmsford. The New Street factory was scheduled to be redeveloped with work planned to start during 2010, however this fell through after the new site owners Ashwell Property Group entered administration in December 2009. The New Street factory remained empty, derelict and vandalised for several years much to the dismay of Marconi Veterans and Chelmsfordians.