PEN UNDERWRITING LIMITED
Company number 05172311 · Monitor this company
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Overview
- Company type
- Private Limited Company
- Incorporated
- 2004-07-07
- Registered office
- The Walbrook Building, 25 Walbrook, London, EC4N 8AW
- Postcode
- EC4N 8AW
- Capital
- 23,824,639 GBP
- Accounts category
- Full
Accounts
- Last made up to
- 2025-12-31
- Next due by
- 2027-09-30
- Financial year end
- 31 December
Confirmation statement
- Last statement dated
- 2026-06-29
- Next due by
- 2027-07-13
Nature of business (SIC)
- 65120 Non-life insurance
Officers 13 current · 44 resigned
Group structure 2 subsidiaries
Controlled by GALLAGHER HOLDINGS (UK) LIMITED — since 2016-09-30
-
CONTEGO UNDERWRITING LIMITED Dissolved
-
ZENNOR LIMITED Dissolved
From persons-with-significant-control filings on the public register.
Data protection registration
Registered with the ICO as a data protection fee payer — Z8864447 (Tier 1), registered since 2004.
Information Commissioner's Office register of fee payers, licensed under the Open Government Licence.
Contact details
- Website
- penunderwriting.co.uk
Pen Underwriting is one of the largest specialist insurance businesses in the UK, with a Feefo Platinum Trusted Service Award 2025.
Previous company names
| Name | Date changed |
|---|---|
| OIM UNDERWRITING LIMITED | 2015-09-29 |
| OXYGEN INSURANCE MANAGERS LIMITED | 2008-09-17 |
| OXYGEN INSURANCE INTERMEDIARIES EMA LIMITED | 2004-10-07 |
Previous registered addresses 10
| Address | Changed on |
|---|---|
| 9 ALIE STREET, LONDON, E1 8DE | 2013-08-19 |
| 9 ALIE STREET, LONDON, E18 9DE | 2008-10-30 |
| GISTERED OFFICE CHANGED ON 30/10/2008 FROM, 9 ALIE STREET, LONDON, E18 9DE | 2008-10-30 |
| GISTERED OFFICE CHANGED ON 23/09/2008 FROM, 33 HARBOUR EXCHANGE SQUARE, LONDON, E14 9GG, UNITED KINGDOM | 2008-09-23 |
| 33 HARBOUR EXCHANGE SQUARE, LONDON, E14 9GG, UNITED KINGDOM | 2008-09-23 |
| 34 LIME STREET, LONDON, EC3M 7AJ | 2008-06-12 |
| GISTERED OFFICE CHANGED ON 12/06/2008 FROM, 34 LIME STREET, LONDON, EC3M 7AJ | 2008-06-12 |
| INTERNATIONAL HOUSE, C/O INCE & CO, 1 ST KATHARINE'S WAY, LONDON E1W 1UN | 2007-04-17 |
| KNOLLYS HOUSE, 11 BYWARD STREET, LONDON, EC3R 5EN | 2005-12-02 |
| OXYGEN INSURANCE BROKERS, CITY, POINT, 1 ROPEMAKER STREET, LONDON, EC2Y 9HT | 2005-02-07 |
The class of 2004
37%
of the 135,820 companies incorporated in 2004 are still active today; 61% have since been dissolved.
A fact about the year, not a forecast for this company.
Property in England & Wales 3 titles
- Leasehold
- 3
- Most recent registration
- 2021-08-02
- Where
- Surrey (2), West Sussex (1)
| Title number | County | Tenure | Registered | Price paid |
|---|---|---|---|---|
| SY819513 | Surrey | Leasehold | 2021-08-02 | — |
| SY856774 | Surrey | Leasehold | 2021-08-02 | — |
| WSX414142 | West Sussex | Leasehold | 2019-11-27 | — |
For addresses and the authoritative register entry, use HM Land Registry's official search (£3 per title).
Information produced by HM Land Registry. © Crown copyright 2026. Dataset as at 2026-08.
This company's registered activities are in financial services. If it carries on regulated business, it should appear on the FCA's Financial Services Register — the official record of authorised firms.