This week with Steve Hewlett: MPs have been grilling the BBC over the way it contracts its presenters, leading to allegations such as that on the front of the Daily Mail this week: "148 BBC stars avoiding tax". Conservative MP Steve Barclay was one of those questioning the BBC and he tells Steve where his concerns lie. Bal Samra, the BBC's director of business affairs, responds. And, in a week when the BBC and its commercial arm BBC Worldwide have published their reports, analyst Theresa Wise asks whether Worldwide could be doing more to contribute to the BBC's income for the benefit of licence fee payers.The British Olympic Association has had to reject thousands of applications for press passes. One of those surprised to find themselves among the reject pile was The Voice, "Britain's favourite black newspaper", which believed it had assurances from Seb Coe that it would be allowed in to cover the events. Now, after some lobbying and a pass becoming available today, it has a permit to cover track and field. Elizabeth Pears of The Voice tells the story and Ashling O'Connor, who helped distribute the passes, explains how they decided who to include in the shortlist.And Yahoo has a new chief executive, Marissa Mayer, straight from Google. Can she help turn the company around? Theresa Wise and the Guardian's technology editor Charles Arthur discuss her prospects.The producer is Simon Tillotson.