Analysts say 'pure' life insurers, such as Prudential, Royal & SunAlliance and CGNU, could be in deeper trouble as they lack the crutch of a major banking business. James Leal, banking analyst at Gerrard, says various 'smoke and mirrors' accounting tricks can also be used to meet solvency requirements but he believes Scottish Mutual has already played that card. 'It's quite possible that it is breaking the ratios already,' he added.