What do you get when you put into the same room the bosses of Vodafone, BT, Rolls-Royce, Lloyds Banking Group, TalkTalk Telecom, Barclays, Nationwide Building Society, HSBC UK, Amazon UK, Merlin Entertainments, Siemens UK & Ireland, Unipart, the John Lewis Partnership, EY, KPMG, the CBI, Facebook UK & Ireland and the Institute of Directors and a gaggle of influential tech entrepreneurs?