Peter Day enters the world of the private equity groups.
Private equity firms' influence is increasing. They have huge resources that mean they can seek to control some of Britain's biggest companies -- such as Sainsbury's -- in their search for profit.
But with their growing power comes increasing concerns.
Do private equity firms really create value for the British economy? Or do they - as their critics charge -destabilize previously sound companies through financial engineering?
And could the huge debts involved in private equity lead to grief for the economy as a whole?
Peter Day returns to the world of private equity to find out.
You can listen to previous editions of In Business that dealt with rise of Private Equity and Hedge Funds.
Peter Day writes a regular column for BBC Online. Read Peter Day's latest Work in Progress: How to avoid the fatal F-Laws
About the programme
We try to make ear-grabbing programmes about the whole world of work, public and private, from vast corporations to modest volunteers.
In Business is all about change. New ways of work and new technologies are challenging most of the assumptions by which organisations have been run for the last 100 years. We try to report on ideas coming over the horizon, just before they start being talked about. We hope it is an exhilarating ride.
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