<P> The dome was publicly renamed as The O2 on 31 May 2005 , in a £ 6 million - per - year deal with telecommunications company O2 plc , now a subsidiary of Telefónica Europe . This announcement , which presaged a major redevelopment of the site that retained little beyond the shell of the dome , gave publicity to the dome 's transition into an entertainment district including an indoor arena , a music club , a cinema , an exhibition space and bars and restaurants . This redevelopment was undertaken by the dome 's new owners , the Anschutz Entertainment Group , to a design by HOK SVE and Buro Happold . It cost £ 600 million , and the resulting venue opened to the public on 24 June 2007 , with a concert by rock band Bon Jovi . </P>
<P> The dome was publicly renamed as The O2 on 31 May 2005 , in a £ 6 million - per - year deal with telecommunications company O2 plc , now a subsidiary of Telefónica Europe . This announcement , which presaged a major redevelopment of the site that retained little beyond the shell of the dome , gave publicity to the dome 's transition into an entertainment district including an indoor arena , a music club , a cinema , an exhibition space and bars and restaurants . This redevelopment was undertaken by the dome 's new owners , the Anschutz Entertainment Group , to a design by HOK SVE and Buro Happold . It cost £ 600 million , and the resulting venue opened to the public on 24 June 2007 , with a concert by rock band Bon Jovi . </P>
when did the millennium dome became the o2 arena
when did the millennium dome became the o2 arena
31 May 2005
31 May 2005