Garth Donnan

Financial Adviser

Garth is a South African born wealth manager based in London, focused on providing sustainable goal-based financial management to his clients. His top priority is working with individuals alongside their family and business interests whilst acting as their long-term planning partner and trusted adviser.

Growing up in Johannesburg, Garth was a helicopter pilot & instructor and captained flights for sports professionals as well as high-pressure emergency air ambulance situations.

Having moved to the UK, Garth started working in the prime London property sector alongside property investors and developers, before joining Castell Wealth Management as a financial adviser after graduating from the St. James’s Place adviser academy.

Away from work, Garth enjoys playing football for his local side, London Olympia FC. He is a proud sponsor of the club and regularly trains with his teammates. He relishes other outdoor activities such as golf and running, as well as spending time with family and friends.


City professionals, UK resident South African ex-pats, Business listing planning for shareholders and key stakeholders, senior corporate executive advice.