Welcome to Thomas Miller Investment

Thomas Miller Investment is a specialist investment management firm, known for our responsive but disciplined approach to investment markets, using all available opportunities to meet each of our clients' current and future needs.

We are part of the Thomas Miller Group that was formed in 1885 and have a rich heritage of prudent investment management spanning decades. Today we manage £2.5bn* of assets worldwide for a variety of clients.

Our disciplined investment philosophy puts each client's investment objectives at the very centre of our recommended solutions.

*as at 31 December 2023

Our specialisation lies in the Isle of Man

We apply a responsive yet disciplined approach to investment markets, leveraging all available opportunities to address our clients' current and future needs. Our reputation is built on our proven outcomes-based approach to providing investment management advice to institutions and the advisers who serve them.​

​Our institutional clients span from insurance clients, public organisations to charities, benefitting from our highly skilled investment teams' carefully crafted strategies.​

Our Heritage

Investing assets for the Thomas Miller Group since 1885, Thomas Miller Investment was incorporated as a separate entity in 1988.

Our knowledge, experience and expertise gained over the years provides the solid foundations on which the business operates.

Thomas Miller Group is an independent and international insurance, professional and investment services provider. Headquartered in London, its business operations span the globe operating in all major jurisdictions.

About you

In a crowded market, we seek to stand apart through the strength of our investment results and the quality of long-term relationships we build with our clients.

As our client, you will benefit from a direct personal relationship with your portfolio manager who is focused on achieving your goals.

We provide onshore and offshore investment management services for: