James Kostoris

Watch for changes

Where they hold approval

Firms where this individual holds — or has held — an FCA-approved role.

Argonaut Capital Partners LLP
FRN 433809
- SMF27 Partner (since 29 Oct 2025)
- [FCA CF] Client dealing (since 2 Dec 2024)
- [FCA CF] Significant management (since 2 Dec 2024)
Lancaster Investment Management LLP (no longer approved here)
FRN 472385
- [FCA CF] Client dealing (13 Sep 2023 to 31 May 2024)

Updates to this individual's record on the FCA register.

No changes recorded yet.

A quick guide to the terms on this page.

The FCA: The Financial Conduct Authority is the UK's regulator for banking, lending, insurance, investments and payments. Senior staff at any authorised firm have to be approved by the FCA personally.
Approved individual: Someone the FCA has personally signed off to hold a senior role at an authorised firm — directors, compliance officers and similar. They're held accountable for the firm's conduct.
Controlled functions: The specific senior roles the FCA approves people to hold, like 'Compliance oversight' or 'Money laundering reporting'. Each approval is tied to a particular firm.
IRN: Individual Reference Number — the unique ID the FCA assigns to each approved person. It stays the same as they move between firms.

Information on this page is sourced from the official FCA register.