'Tarnished goods?' Sir Martin Sorrell returns to business frontline

His new firm is as much about rebuilding reputation as getting back at WPP, say observersSir Martin Sorrell’s return to the business frontline with a quick-fire plan to build a next-generation mini-WPP is facing more challenges than the media mogul was probably expecting. Already sour relations with his former employer have taken a turn for the worse, with the advertising group issuing a legal threat to cut off £20m in future payouts its former chief executive remains in line for if