Royal & SunAlliance, the insurance group, has called in bankers to sell off its offshore investment arm in order to release capital. Lehman brothers has been appointed to sell the Isle of Man based business, said to be worth around £40m. Last year Royal & SunAlliance failed to sell its life insurance and investment management businesses as a package, and last month they abandoned plans to sell the life and investment business as a package. Goldman Sachs has been appointed to sell its onshore investment management arm which could be worth up to £300m.