were the heaviest decliners among Europe’s largest listed companies on the first trading day in London since the Financial Times revealed talks that could mark the medical instruments group’s most substantial acquisition. Elsewhere in London Just Eat rose 1.5 per cent in early London trading. Cat Rock Capital Management, a US hedge fund that owns 1.7 per cent of the company’s shares, on Monday urged the online delivery group to turn to growth by acquisition rather than shaking up its management board.