By Charlie Conchie The prospect of Rachel Reeves forcing pension funds to back British stocks is being discussed as a more serious possibility, writes Charlie Conchie As the City grandees Nicholas Lyons and Peter Harrison gathered a room of executives for a workshop at the London Stock Exchange last month, a familiar gripe was on the agenda. The two bosses – chair of Phoenix Group and the outgoing chief executive of Schroders, respectively – were once again puzzling over how to get billions of pounds of pension money flowing into the UK’s markets as part of the Capital Markets Industry Taskfor…