They both join from Close Brothers Asset Management and will take the roles of business development director and business development assistant respectively.

They join Penny Lovell, chief executive of Sanlam Private Office. It was announced in August that Ms Lovell will be responsible for spearheading Sanlam UK’s new offering for high net worth clients with assets over £1 million.

Mr Moon spent the last two years at Close Brothers Asset Management, where he was business development director. Previously, he held similar roles at Tilney Investment Management and Tilney Bestinvest. Mr Cayzer joins after also having spent the last two years at Close Brothers Asset Management and previously spent time at Fleming Family and Partners.

Penny Lovell, chief executive, Sanlam Private Office, said: “Both Jonathan and Will are highly talented professionals with a deep understanding of the needs and requirements of high net worth individuals. I have worked with them closely over a number of years and I am confident that, together, we can create a first-class high net worth Private Office proposition at Sanlam UK.”

Sanlam now controls over £12 billion in client assets.