Aberdeen Standard Investments and a pair of hedge funds are among those likely to have taken a paper hit from the dramatic share-price slump of Interserve, the outsourcing group, on December 10.

Shares in the company plunged 53% yesterday, after it announced a restructuring plan that will involve swapping a “substantial portion” of the company’s debt into equity, allowing lenders to take control of the business. That will result in “material dilution” for existing shareholders, the company warned.