You may not know this, but McGladrey's British sister from another mister is RSM Tenon. Like most large accounting firms RSM Tenon provides a wide variety of exemplary professional services demanded by the capital markets. Unlike most large accounting firms, however, it has shareholders and is listed on a stock exchange.
Those shareholders get to vote on various things including the appointment of a company's auditor. And just like shareholders in the U.S., when an auditor makes a mistake, U.K. shareholders get pissed. And, at least in this case, U.K. shareholders actually do something about it!
Following a shareholders vote at the firm's annual general meeting today, 64% of shareholders with 72,960,000 shares voted against re-appointing PwC as auditors, compared to the 36% of shareholders with 40,800,000 who voted in favour of the resolution. The move is a culmination of a tense relationship between the PwC and Tenon. In August PwC faced an investigation from the Accountacy [sic] and Actuarial Discipline Board over its audit of Tenon. Reports emerged in April that Tenon had sought legal advice over alleged errors made by PwC in its accounts.

So waaaay back in the early to mid Aughts when Ayal Rosenthal was slumming over at 300 Madison, he got a little entrepreneurial (P. Dubs auditors don’t make shit, you know) with his Dad, two brothers and a host of others. They made a little bit of extra dough ($3.7 million) by running an insider trading scheme based on various tips, some of which were related to clients that Ayal worked on at PwC.