But Ofcom could still weigh in on the issue too as it is responsible for deciding whether the bosses of News Corp are 'fit and proper' to run a broadcaster. Political pressure is mounting on the deal, with Labour calling a vote in the House of Commons tomorrow urging Mr Murdoch to withdraw the bid - a motion the Tories and Liberal Democrats have said they will support. And Mr Murdoch, his son James and News International boss Rebekah Brooks have been asked to appear before the Culture, Media and Sport (CMS) Committee next week to give evidence about the hacking and police bribery accusations. Shares in BSkyB closed down 23.5p at 692p today, on top of a 5 per cent drop yesterday. But News Corp shares are trading up 1% at $15.67 on the Nasdaq in New York this afternoon after it launched a $5billion share buyback in an effort to stabilise the value of the company.