Mr Horton was appointed permanently after serving in the role on an interim basis.
Since he joined the firm in February he has worked closely with chief executive, Roger Brosch, and head of corporate development, Henna Fry, to implement what the firm called its “ambitious development plans.”
Foster Denovo acquired TEBC Ltd, a Buckinghamshire based employee benefits consultancy last year and says it expects to complete further deals in the first quarter of 2019.
Mr Horton is an experienced chartered accountant whose previous roles include group finance director at financial advice firm LEBC Group Limited and insurance intermediary Hyperion Insurance Group.
Prior to joining Foster Denovo, he worked on a number of interim projects leading business transformation and fund raising.
Roger Brosch, chief executive of Foster Denovo, said: “We are delighted to have Richard join us on a permanent basis.
“He brings a wealth of experience across fund raising, restructuring, acquisitions, and financial management and control, which is a huge asset as we continue on our current growth strategy.
Mr Horton said: “This is an exciting time at Foster Denovo and I look forward to continuing to work with Roger and his colleagues to deliver on the strategy and develop the firm’s presence in the financial advice market.”