Aviva is preparing to set up a new team of top fund managers in ­Edinburgh, hundreds of miles away from its London base, after poaching superstar investor David Cumming. Sources said that Aviva Investors, which manages around £69bn worth of assets on behalf of Britain’s biggest insurance company, is on the hunt for office space in Scotland’s capital in a move that will see Standard Life’s ­former funds guru relocate from the City. Mr Cumming became Aviva’s chief investment officer in January, ending months of speculation over which ­asset manager he might join after leaving Standard Life.