Walker, who joined Sarasin & Partners in 2011 as third party fund analyst, became associate partner of the firm in 2014. She was previously an analyst within HSBC Global Asset Management's multi-manager team.

In her new role, she will work alongside Jamie Fletcher and Alistair Campbell who were recently promoted to deputy fund managers on the fund of funds range.

Jeffries will remain with the firm as fund director.

As of the end of 2015, Sarasin managed £13.4 billion ($18.9 billion) on behalf of private clients, charities, institutions and intermediaries from the UK and overseas.