(Bloomberg) -- Banks and asset managers including HSBC Holdings Plc and BlackRock Inc. are helping finalize proposals for UK housing and energy policy that could form key planks of the Labour Party’s growth agenda if it wins next month’s general election. Ideas discussed Monday in a breakfast meeting between Labour’s shadow chancellor, Rachel Reeves, and executives who sit on the party’s British Infrastructure Council include investing in skills to retrofit thousands of homes with insulation, double glazing and other energy-saving measures as well as ways to make affordable housing viable...