at Business Design Center on 24 Feb 2012 – 25 Feb 2012

at Business Design Centre on 24 Feb 2011 – 25 Feb 2011

at Business Design Centre, 52 Upper Street, Islington, London, United Kingdom on 26 Feb 2010 – 27 Feb 2010

at Olympia Conference Centre, London, UK on 27 Feb 2009 – 28 Feb 2009