The king is gone, long live… whom exactly? BBC future media and technology director Ashley Highfield’s move to Project Kangaroo opens up perhaps the most powerful position in UK digital media, controlling a £400 million budget and attracting 18.1 million monthly visitors to the UK’s number-five website. So who are the early runners and riders? I polled some insiders for this print-and-keep guide…the candidates on our UK site paidContent:UK.