Artemis Investment Management has hired Andy Marsh to its UK equity income team, starting in February 2018.
Marsh joins from Polar Capital, where he was a partner.
He previously worked as head of equity sales for Investec, and was formerly an analyst at Merrill Lynch and ING Charterhouse.
Frost said: 'His approach to picking stocks - concentrating on free cashflow and sustainable returns for investors - fits well with ours.
'Nick and I look forward to working with Andy over the years ahead.'
Marsh added: 'The opportunity to work alongside Adrian and Nick, and on a fund with such a strong franchise and record, is an exciting one.'