Jonathan Giles

Managing Director,  Rathbones
Location: St Helier, Jersey,
Expertise: Investment Management,
Picture of Jonathan Giles

Shortlisted

Magic Circle Awards - 2026

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IFC Awards - 2026

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Future Leaders Awards - 2025

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Brand & Marketing Awards - 2026

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Powerwomen Inernational Awards - 2025

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Powerwomen USA Awards - 2025

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Latest Article

IFC of the Year – global jurisdiction news and developments

Ahead of the Citywealth IFC Awards on 24 January 2024, Citywealth CEO Karen Jones summarises international updates from IFCs. Featuring: Jersey; Singapore; Bermuda; Guernsey; Cayman; Delaware; Abu Dhabi (AGM); and Isle of Man. Tickets for the IFC Awards available now.

Read more

Latest Review

Peer review:
Citywealth Recommended
18 Jul 2025

Profile

Jonathan joined Rathbones in Jersey as Managing Director in January 2006. With advisory and investment management experience spanning almost forty years, Jonathan is able to simplify complex problems and build long-standing relationships with clients and their advisors. In addition to his executive responsibilities, Jonathan manages money for a range of significant UHNW families, trusts and charities, and also some institutional mandates. He is a Fellow of the Chartered Institute for Securities & Investment; and for several years he has been included in the Citywealth Leaders List, which recognises professionals in the private wealth management industry who have technical expertise, trusted status, integrity, and reputation.

Jonathan is exceptional, in that his contact with his clients is always his first priority. His availability, his enthusiasm, his desire to help and to find solutions, his attention to details, are all commendable. He is well respected in his field, and deservedly so.

Contact

Rathbones Investment Management International 25/26 Esplanade, St Helier, Jersey JE1 2RB

Reviews

Peer review:
Citywealth Recommended
18 Jul 2025
Peer review:
Peer review:
Citywealth Recommended
Jonathan Giles - Rathbones
06 Dec 2021

Case Studies

Consolidated advice for an entrepreneur; assets c£70m

Consolidated wealth management advice for an entrepreneur; assets c£70m

Advising a UK-based entrepreneur and family who are looking to move full time to Jersey. This is a whole wealth review across existing quoted investments, a growing commercial and residential property book and incorporating unquoted business exposure across shipping, pharma, construction and his core business, alternative energy. The aim is to connect all parts of the family‘s financial affairs into a coherent risk-managed strategy to allow the entrepreneur to focus on his private investments, whilst Rathbones manages both the overall balance sheet to agreed objectives and offers improved clarity on potentially correlated risks. For example a bias within liquidity, credit, currency, company, industry or revenue stream. My work has required liaison with the family, their trustees and tax advisers, multiple custodians plus third party investment and real estate managers.

Articles

IFC of the Year – global jurisdiction news and developments

Ahead of the Citywealth IFC Awards on 24 January 2024, Citywealth CEO Karen Jones summarises international updates from IFCs. Featuring: Jersey; Singapore; Bermuda; Guernsey; Cayman; Delaware; Abu Dhabi (AGM); and Isle of Man. Tickets for the IFC Awards available now.

Read more
Multi-generational entrepreneurs

The main difficulty with a family business is to ensure the continuity of activity throughout generations. Citywealth spoke to Nicolas Mirabaud, Alexander Hoare, Jonathan Giles at Rathbone Investment Management International, and Khaled Said, about joys and pains of running a family business.

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60-second interview: Jonathan Giles, managing director, Rathbones

Jonathan Giles, managing director of Rathbone Investment Management International, talks about his work, industry trends, and surviving a business trip in South Africa.

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Awards

2022 IFC Awards
GOLD - Investment Manager of the Year – Channel Islands & Isle of Man
2021 IFC Awards
GOLD - Investment Manager of the Year – Channel Islands & Isle of Man
2017 IFC Awards
Outstanding Individual of the Year

Commendations

Top 100 Wealth Management Advisors 2022
Top 50 Wealth Management Advisors 2020
Top 20 Men in Private Wealth Management 2020
Spring 2017 Top Star Rated: Top 50 editor's choice
Autumn 2017 Top 50 IFC editor's choice