Flotation mooted amid favourable environment for long-income investments. : Aviva Investors plans to raise £200m (€227m) by floating a long-income real estate fund on the London Stock Exchange. The investment manager, which manages £4bn in long-lease real estate strategies, said it will launch an initial public offering next month for Aviva Investors Secure Income REIT. Aviva Investors already manages the Lime Property Fund, a £2bn unlisted long-lease fund, which last week acquired a portfolio of care homes for £71m.