The founder of price comparison website moneysupermarket.com is stepping back from the day-to-day running of the business.
Chief executive Simon Nixon, who launched the firm in 1999, will take on a new role of executive deputy chairman to focus on product development.
Nixon owns 54 per cent of moneysupermarket.com but has no plans to sell any of his shares.
He said yesterday he believed the entrepreneurial "super-growth" phase of the business was over, meaning different skills are needed to run a larger and more complex firm.
The company, based in Ewloe, Flintshire, has been hit by competition and a clampdown on lending by struggling banks since it floated 18 months ago, sending its shares down nearly 75 per cent.
This has seen the value of Nixon's stake fall from around 461 million to 125 million since the 170p float in July last year.
Nixon will be succeeded in February by Peter Plumb, who joined in November after previous experience with major firms including Disney and PepsiCo.
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ENSUS, the bio-fuels company, yesterday said that the UK's first major bio-ethanol plant could open next summer, producing up to 450 million litres of fuel each year.
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I AM gravely concerned by the apparent multiple failures over at least a decade to thoroughly investigate these allegations or at any point to seek formal authority to pursue them."
Christopher Cox, chairman of the US Securities and Exchange Commission, criticising his own regulators for not investigating Wall Street money manager Bernard Madoff
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Greg Brown and Sanjay Jha, joint chief executives, will voluntarily take a 25 per cent cut to their salaries.