By Amber Murray Nelson Peltz’s activist hedge fund Trian Partners is among the shareholders reportedly calling for a shake-up at pest control firm Rentokil after a severe drop in its share price. Trian Partners, which has built a fearsome reputation for waging activist campaigns on global boardrooms, has held urgent meetings with Rentokil’s chief executive and chairman to calm fears over the future of the company, according to The Sunday Times. Shareholders have raised concerns about the company’s ability to integrate a US business it bought in 2022 and have reportedly called for the company’s…