By Elliot Gulliver-Needham There will continue to be a significant shake-up in who manages some of the biggest funds at the UK’s largest wealth manager, the chief investment officer of St James’s Place has told City AM. In December, the UK’s largest wealth manager pulled £2bn from Jacob Rees-Mogg-founded Somerset Capital Management, causing the firm to shutter almost immediately, as the mandate had represented around two-thirds of its assets. This week, St James’s Place made a similar move, ditching Impax Asset Management and two others as managers of a struggling £9.9bn fund, causing the smal…