Firmoscan
Active07136128Private limited companyLondon

THAMES UNDERWRITING LIMITED

Significant control: Ardonagh Advisory Mga Holdings Limited (75–100%)

Companies HouseCompanies House

From public filings as at 31 Aug 2026; may contain errors or be out of date. Verify at Companies House · Terms

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Registered activity: Non-life insurance (SIC 65120). We’re building product and service lists for UK companies. Get this one when it’s ready.

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01

Summary

Generated from filed data · no estimates

THAMES UNDERWRITING LIMITED is an active private limited company (company number 07136128) incorporated on 26 January 2010, registered in London. Its registered activity is non-life insurance (SIC 65120). Accounts are on file at Companies House (audit exemption subsidiary) but not yet parsed into this record.

There are 247 companies in non-life insurance in London with filed accounts; the median reports net assets of £32k and is 16 years old.

02

Ownership and control

1 active · 2 other
  • Ardonagh Advisory Mga Holdings Limited
    corporate entity, England And Wales · since 1 November 2022
    • owns 75–100% of shares
    • holds 75–100% of voting rights
    • can appoint or remove directors
  • Mr Keith Derek Syrett
    Individual · since 26 January 2017 · ceased 12 August 2020
    • owns 25–50% of shares
  • Geo Specialty Group Holdings Limited
    corporate entity · since 12 August 2020 · ceased 1 November 2022
    • owns 75–100% of shares
    • holds 75–100% of voting rights
    • can appoint or remove directors

Persons with significant control hold 25% or more of shares or voting rights. Smaller shareholdings are only listed in confirmation-statement documents. Directors and secretaries: see the officers list at Companies House.

03

Key dates

Incorporated
26 January 201016 yrs ago
First accounts due
26 October 20115477 days overdue
Confirmation statement due
9 February 2027in 108 days

Due dates are expected from Companies House filing rules; confirm on the official register before relying on them.

04

Activity

SIC 65120
Non-life insurance
Accounts type
Audit Exemption Subsidiary
05

Financials

No accounts on record

Accounts exist on the register but their figures are not in this dataset yet.

06

Filing and accounts signals

Facts from the register · no rating
  • Incorporated five or more years agoIncorporated 26 January 2010
  • Accounts past their due dateDue 26 October 2011

Neutral facts read from the register and filed accounts, each with its evidence. They are not a rating, a prediction or advice, and may be incomplete or out of date. How each signal is derived.

07

Timeline

Newest first
  1. Confirmation statement duein 108 days
  2. First accounts due5477 days overdue
  3. Incorporated
08

Similar companies in London

Same activity (non-life insurance), closest in incorporation date

All companies incorporated on 26 January 2010 · in Jan 2010.

09

Reminders for THAMES UNDERWRITING LIMITED

Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.

Source: Companies House register, snapshot 2026-08-31. Open Government Licence v3.0. View on Companies House. Methodology · About · Markdown.

This information comes from public filings and our automated processing of them. It may contain errors, be incomplete or be out of date, and is not advice or a credit reference. Check the official record before relying on it. Terms · Privacy · Report an error (corrected within one working day).