Vincent Tchenguiz has made a takeover bid for Erinaceous. Sunday Times

Tchenguiz is thought to have made his approach through Consensus Business Group, his main investment vehicle, and is said to have asked stockbroker KBC Peel Hunt to advise him.

Erinaceous, whose clients include Gillette, HSBC and Revenue and Customs, could now find itself at the centre of a £350m bid battle, having previously received approaches from private equity firms 3i and Bridgepoint, which are both reportedly interested in backing a management buyout.