A list of 35 of the biggest professional trustee firms in UK pensions

List: The biggest professional trustee firms in the UK

Jonathan Stapleton

25 June 2026 • 2 min read

If we have missed any firms out, or included any in error, please contact [email protected]

The list of 35 firms is:

First published: 2020. Last updated: 25 June 2026

Latest professional trustee research

Barnett Waddingham – Professional Trustee Survey 2026: The report builds on the previous year's survey with a deeper look at corporate sole trustees, value for money, and the satisfaction rates of those who work with professional trustees, drawing on over 290 responses from member-nominated trustees, employer-nominated trustees, company representatives and pension managers across a range of scheme sizes.

Isio – 2026 Professional Independent Trustee Survey: Isio's survey focuses on the ten larger firms with over 50 appointments each. It revealed the 10 largest professional trustee firms now oversee over £1trn in assets across 2,400 pension schemes, that their market share has grown from 39% in 2020 to 45% in 2025.

LCP – Sole Mates 2025: A longitudinal survey of some 18 professional trustee firms in the sector. LCP's fifth annual survey found the market recorded its slowest annual growth in five years, and that while 53% of UK DB schemes now have a professional trustee in place, growth in appointments has slowed substantially.

Hymans Robertson – 2025 Sole Trustee Landscape Report: The report found that just over 40% of professional trustee appointments to DB schemes are now as sole trustee, with more than 10% growth in the use of sole trusteeship over the year.

WTW – Professional Trustee Survey 2026: WTW's survey of the largest professional trustee firms and among sole traders showed professional trustee appointments is slowing as the market matures and increasing numbers of DB schemes have successfully moved through insurance buyout to wind-up.