Staszewski joined Columbia Threadneedle in 2012 and holds responsibility for European and global credit portfolio. He previously served as a credit analyst at JP Morgan and Aviva Investors. The mandate adds to the range of funds managed by Columbia Threadneedle on behalf of St James's Place, including a £7.9bn Strategic Managed mandate and a £760m UK Equity mandate. Michaela Collet-Jackson, head of distribution, EMEA at Columbia Threadneedle Investments, said: "We have a long-standing relationship with St. James's Place and we are very honoured to be able to grow this relationship further. "Alasdair Ross is an award-winning portfolio manager with a track record of delivering strong risk adjusted returns for clients through issuer and security selection and we are excited to manage the global investment grade credit allocations for St. James's Place clients.