She will work alongside Spencer Moulton, who already has an established role to develop and manage the private equity offering for the business.
Harrison had been responsible at UBS for UK client distribution covering 175 client advisers, 580 clients and over $1bn of commitments in 29 private equity feeder vehicles.
Nathalie Dauriac-Stoebe, chief executive of Signia Wealth, said: “Ana María has an excellent track record and an abundance of global wealth management experience. Her appointment will build on the successful proposition Spencer has developed and further enhance the skill set of our private equity team. She will work alongside the team to source for our clients hand picked and bespoke private equity investment opportunities."
Harrison’s other experience includes as director and head of global aftersales product management for alternative investments at Citigroup Private Bank, and senior consultant in the global business strategy group at Emerging Market Economics.
