Railpen, the U.K.’s £28 billion pension scheme for railway workers, is asking hundreds of companies in its portfolio for specific details on climate policy. It’s one of many allocators demanding more. RPMI Railpen —manager of the U.K.’s £28 billion ($38.6 billion) Railways Pension Scheme — has written to more than 200 companies in which it invests, asking them for deeper disclosures of their climate policies. Railpen plans to center its 2018 shareholder activism on climate issues, having joined the Task Force on Climate-related Financial Disclosures last year. The TCFD promotes the use of standardized financial risk disclosures in investing.