AON UK LIMITED
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Next accounts due
2026-09-30 (in 4mo)
Last filed for 2024-12-31
Confirmation statement due
2027-02-16 (in 9mo)
Last made up 2026-02-02
Watchouts
Cash
£2B
-15.5% vs 2023
Net assets
£1B
+8.9% vs 2023
Employees
4,367
-1.7% vs 2023
Profit before tax
£524M
+3.8% vs 2023
Watchouts
Facts from the Companies House register and the latest accounts — not a rating
-
3 officer resignations in last 12 months
Multiple officers have left the board recently — see the People section for who.
Net assets
2-year trend · vs Financials median
Accounts
2-year trend · latest reflected 2024-12-31
| Metric | Trend | 2023-12-31 | 2024-12-31 |
|---|---|---|---|
| Turnover | £1,230,987,000 | £1,255,434,000 | |
| Operating profit | £452,509,000 | £475,941,000 | |
| Profit before tax | £504,979,000 | £524,412,000 | |
| Net profit | £404,224,000 | £370,584,000 | |
| Cash | £1,903,275,000 | £1,608,871,000 | |
| Total assets less current liabilities | £1,273,592,000 | £1,368,286,000 | |
| Net assets | £1,183,079,000 | £1,288,924,000 | |
| Equity | £1,183,079,000 | £1,288,924,000 | |
| Average employees | 4,443 | 4,367 | |
| Wages | £328,094,000 | £329,933,000 |
Values shown as filed in the company's annual accounts. — indicates the figure wasn't present under that line item in that period. About these numbers
Ratios
Computed from the line items above — sparklines read oldest → newest
| Ratio | Trend | 2023-12-31 | 2024-12-31 |
|---|---|---|---|
| Operating margin | 36.8% | 37.9% | |
| Net margin | 32.8% | 29.5% | |
| Return on capital employed | 35.5% | 34.8% | |
| Gearing (liabilities / total assets) | 75.9% | 74.7% | |
| Current ratio | 1.18x | 1.12x | |
| Interest cover | 514.21x | 250.76x |
Margins divide P&L lines by turnover. Gearing is liabilities over total assets. Current ratio is current assets over creditors falling due within one year. Interest cover is operating profit over absolute finance costs. Sector-distribution context coming next.
Audit & accounting basis
- Accounting basis
- FRS 101
- Reporting scope
- Standalone (parent only)
- Auditor
- Ernst & Young LLP
- Audit opinion
- Unqualified (clean)
- Going concern
- Affirmed
“After making enquiries, the Directors have a reasonable expectation that the Company has adequate resources to continue in operational existence for the foreseeable future. Accordingly, the Board continues to adopt the going concern basis in preparing the annual report and financial statements.”
Group structure
- AON UK LIMITED · parent
- McLagan (Aon) Limited 100%
- Aon UK Trustees Limited 100%
- Henderson Insurance Brokers Limited 100%
- Aon Brasil Corretora de Reaseguros Ltda 100%
- Aon Group Venezuela Corretaje de Reaseguros, C.A. 100%
- Aon Peru Corredores de Reaseguros S.A. 100%
- Aon Consulting Limited 100%
- Associação Instituto Aon 33%
- Portus Consulting Limited 100%
Significant events
- “The Griffiths & Armour group was acquired on 1 January 2025 for a total consideration of £341.3m. This involved the Company acquiring 100% of the share capital of Griffiths & Armour Holdings Limited as well as a direct 32% interest in Griffiths & Armour Partnership, the largest trading company in the group.”
Auditor, going-concern and subsidiary information is drawn from the narrative of the latest annual accounts. About these numbers
People
10 active · 90 resigned
| Name | Role | Appointed | Born | Nationality |
|---|---|---|---|---|
| CLARKE, Dean Leonard | Secretary | 2023-12-19 | — | — |
| AMIRI, Iraj | Director | 2021-02-03 | Feb 1954 | British |
| CHARLES -JONES, Lucinda Claire | Director | 2025-08-28 | Jun 1966 | British |
| COOPER, Kirstine Ann | Director | 2024-06-27 | Aug 1964 | British |
| DAVIES, Neil Richard | Director | 2025-05-01 | Jun 1968 | British |
| JUDD, Carole Ann | Director | 2023-05-02 | Jun 1959 | British |
| KIELTY-O'GARA, Jane Elizabeth | Director | 2024-06-24 | Sep 1976 | British |
| KING, Steven Michael | Director | 2024-12-02 | Apr 1975 | British |
| LAING, Andrew Charles Gordon | Director | 2025-10-10 | Dec 1965 | British |
| WINLOW, Mark | Director | 2024-07-09 | Apr 1962 | British |
Show 90 resigned officers
| Name | Role | Appointed | Resigned |
|---|---|---|---|
| CRUTTWELL, Edward Robert Charles | Secretary | 2008-06-26 | 2010-06-08 |
| DIGNAM, Emma | Secretary | 2023-04-14 | 2023-12-19 |
| HILL, John Lawrence | Secretary | — | 2005-12-31 |
| HOGWOOD, Paul Arthur | Secretary | 2010-06-08 | 2019-06-28 |
| OWEN, Elizabeth Jane | Secretary | 2006-01-01 | 2008-06-26 |
| VERO, Tobias Henry | Secretary | 2019-07-02 | 2023-04-14 |
| ALLEN, Anthony Simon Echalaz | Director | 2010-04-14 | 2014-02-26 |
| AMBROSE, David Charles | Director | 1997-07-01 | 2000-12-31 |
| AMY, Ronald John | Director | 2007-09-27 | 2011-09-30 |
| AMY, Ronald John | Director | 2001-01-01 | 2005-06-30 |
| ATKINS, Richard Charles | Director | 2009-05-01 | 2018-10-24 |
| BAILEY, Marshall Charles | Director | 2023-01-31 | 2023-09-25 |
| BODEN, Anne Elizabeth | Director | 2001-01-01 | 2005-06-30 |
| BOLGER, David | Director | 2005-06-30 | 2007-09-27 |
| BOOTH, Clement Burns | Director | 2004-01-28 | 2005-06-30 |
| BROWN, Robert Iain Cameron | Director | 2009-03-31 | 2014-02-04 |
| BRYAN, Colin Thomas | Director | 2003-01-01 | 2004-12-31 |
| BRYAN, Colin Thomas | Director | 1997-07-01 | 2001-01-01 |
| BRYANT, Stuart Joseph | Director | 2000-01-01 | 2000-12-31 |
| BURNSIDE, Bryan | Director | 1993-11-01 | 1995-12-31 |
| CANTLAY, Charles Peter Thrale | Director | 1997-07-01 | 2001-01-01 |
| CARNEGIE-BROWN, Bruce Neil | Director | 2012-10-29 | 2015-11-04 |
| CHANNELL, Herbert Rocker | Director | 1998-12-17 | 2000-12-31 |
| CHESSHER, Mark Christopher | Director | 2009-01-30 | 2011-04-08 |
| CHILTON, Frederick Paul | Director | 1993-11-01 | 2000-12-31 |
| CHRISTIAN, Dominic Gerard | Director | 2010-04-14 | 2018-07-31 |
| CLARK, Adrian Denis George | Director | 2011-11-10 | 2014-06-18 |
| COLLINS, Gregory Eugene Mary | Director | 2000-06-08 | 2000-12-31 |
| COLLS, Alan Howard Crawfurd | Director | 1997-07-01 | 1997-12-31 |
| CULLEN, John Charles | Director | 2007-10-01 | 2009-01-30 |
| DICKSON, Olivia Catherine | Director | 2006-01-01 | 2009-01-30 |
| DOBBS, Peter Joseph | Director | 2000-01-01 | 2000-12-31 |
| DUDLEY, Richard James | Director | 2014-10-01 | 2022-02-21 |
| EVANS, David Ioan | Director | 1998-01-29 | 1999-05-05 |
| FILLINGHAM, Timothy | Director | 2000-01-01 | 2000-12-31 |
| FORCEY, David John | Director | 1998-04-01 | 2000-12-31 |
| FOX, Stuart Keith | Director | 2001-01-01 | 2005-06-30 |
| FRANKLAND, Nicholas Charles | Director | 2017-11-17 | 2022-09-26 |
| GANDER, Simon Marsland | Director | 2015-06-18 | 2017-09-14 |
| GORE RANDALL, Philip Allan | Director | 2004-01-01 | 2007-09-16 |
| GRIFFIN, Alan Frank | Director | 1996-03-01 | 2000-12-31 |
| GRUPE, Jurgen | Director | 2000-01-01 | 2000-12-31 |
| HALSEY, Alison Margaret | Director | 2015-06-18 | 2021-05-31 |
| HARDMAN, Nicholas John | Director | 2011-04-07 | 2023-05-03 |
| HARMER, Peter Geoffrey | Director | 2007-01-22 | 2009-09-30 |
| HARRISON, Robert Graham | Director | 2001-01-01 | 2003-04-01 |
| HENNESSY, Karl Peter | Director | 2014-03-27 | 2016-09-09 |
| HERBERT, James Neville | Director | 2011-11-10 | 2016-03-31 |
| HOWLAND JACKSON, Anthony Geoffrey Clive | Director | 1997-11-26 | 1999-12-31 |
| ILES, Ronald Alfred | Director | — | 1997-06-12 |
| JACKSON, Keith Thomas | Director | 2016-02-03 | 2017-05-26 |
| JEFFREYS, Simon John Lewis | Director | 2009-05-01 | 2023-02-14 |
| JOHNSTON, John Edward | Director | 2001-01-01 | 2001-03-17 |
| KAVANAUGH, John Lawrence | Director | 1997-07-01 | 1999-12-31 |
| KIMBER, Matthew Paul | Director | 2018-02-27 | 2025-12-11 |
| KNAUDT, Horst | Director | 1997-10-24 | 1999-12-31 |
| LARKIN, Reginald William | Director | — | 1993-11-01 |
| LEDGER, David George | Director | 2008-03-04 | 2018-03-31 |
| MAHONEY, Dennis Leonard | Director | — | 2007-02-28 |
| MANDUCA, Paul Victor Falzon Sant | Director | 2006-01-01 | 2012-09-07 |
| MARJORIBANKS, Francis Nigel | Director | — | 2007-09-28 |
| MCGILL, Stephen Phillip | Director | 2007-01-22 | 2009-01-30 |
| MCKENZIE, Ross Lindsay | Director | 1993-11-01 | 2003-11-11 |
| MEAD, David Stanley | Director | 2007-11-21 | 2009-06-30 |
| MEAD, David Stanley | Director | 2002-09-02 | 2005-06-30 |
| MILTON, Paul Jeffrey | Director | 1997-07-01 | 2000-12-31 |
| MOORE, Rupert James St. Aubyn | Director | 2022-09-26 | 2025-10-10 |
| NELSON, Farah | Director | 2023-05-03 | 2024-08-15 |
| NICHOLSON, John James | Director | 2016-04-20 | 2025-03-31 |
| ORAM, William John | Director | 1993-11-01 | 2000-12-31 |
| OWEN, Elizabeth Jane | Director | 2000-06-08 | 2008-02-26 |
| PAGE, Julie Anne | Director | 2017-07-14 | 2024-06-24 |
| PALMER BROWN, Jonathan Angus David Joseph | Director | 1997-07-01 | 2009-07-09 |
| PETTIGREW, James Neilson | Director | 2012-02-07 | 2014-10-31 |
| PICKERING, Anthony Blatchford | Director | 1997-07-01 | 1998-01-31 |
| PINSENT, Antony Andrew Macpherson | Director | 1997-07-01 | 1999-02-28 |
| POWELL, Roger Charles Jeremy | Director | 2001-01-01 | 2003-04-15 |
| RICHMOND, Carol Ann | Director | 2012-10-15 | 2014-12-31 |
| ROBINSON, Clive George | Director | 2001-02-27 | 2003-06-11 |
| SHANAGHY, Nathan Patrick | Director | 2018-04-01 | 2025-05-01 |
| SMITH, William Blades Berwick | Director | 2000-01-01 | 2000-12-31 |
| STAMP, Philip | Director | 2005-03-01 | 2009-01-30 |
| STEPHENS, Michael John Graham | Director | 2000-01-01 | 2000-12-31 |
| STEWART-BROWN, Brian Trevor | Director | 1997-07-01 | 2003-01-21 |
| STOW, Peter Jeremy John | Director | 1998-04-01 | 2000-12-31 |
| TAYLOR, John Maxwell Percy | Director | 2001-01-01 | 2005-06-30 |
| TORRY, Anne Tracey | Director | 2018-12-28 | 2024-03-31 |
| TUNNICLIFFE, Andrew David | Director | 2016-02-10 | 2017-05-26 |
| TURNER, John Ashley | Director | 1997-07-01 | 2000-12-31 |
| WARNER, Eric David | Director | 1999-09-06 | 2000-12-04 |
Ownership
Persons with significant control
| Name | Kind | Nature of control | Notified | Status |
|---|---|---|---|---|
| Aon Uk Holdings Limited | Corporate entity | Shares 75–100%, Voting 75–100%, Appoints directors | 2016-04-06 | Active |
Filing timeline
Last 20 of 465 total filings
| Date | Type | Category | Description | |
|---|---|---|---|---|
| 2026-02-03 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 2025-12-12 | TM01 | officers | Termination director company with name termination date | |
| 2025-10-20 | AP01 | officers | Appoint person director company with name date | |
| 2025-10-15 | TM01 | officers | Termination director company with name termination date | |
| 2025-08-28 | AP01 | officers | Appoint person director company with name date | |
| 2025-07-24 | AA | accounts | Accounts with accounts type full | |
| 2025-05-01 | AP01 | officers | Appoint person director company with name date | |
| 2025-05-01 | TM01 | officers | Termination director company with name termination date | |
| 2025-04-03 | TM01 | officers | Termination director company with name termination date | |
| 2025-02-04 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 2024-12-05 | AP01 | officers | Appoint person director company with name date | |
| 2024-08-19 | AA | accounts | Accounts with accounts type full | |
| 2024-08-16 | TM01 | officers | Termination director company with name termination date | |
| 2024-07-17 | AP01 | officers | Appoint person director company with name date | |
| 2024-07-02 | TM01 | officers | Termination director company with name termination date | |
| 2024-07-02 | AP01 | officers | Appoint person director company with name date | |
| 2024-07-02 | AP01 | officers | Appoint person director company with name date | |
| 2024-04-09 | TM01 | officers | Termination director company with name termination date | |
| 2024-02-02 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 2023-12-19 | TM02 | officers | Termination secretary company with name termination date |
Public-record activity
Raw counts from Companies House — last 12–24 months
- Filings
- 8
- Capital events
- 0
- Officers appointed
- 3
- Officers resigned
- 3
last 12 months
last 24 months
last 12 months
last 12 months
Direct counts from the register. No score, no rating — see the Filing timeline for the underlying events.
Year-on-year
FY2023 → FY2024 · period ending 2024-12-31 vs 2023-12-31
-
Turnover
+2%
£1,230,987,000 £1,255,434,000
-
Cash
-15.5%
£1,903,275,000 £1,608,871,000
-
Net assets
+8.9%
£1,183,079,000 £1,288,924,000
-
Employees
-1.7%
4,443 4,367
-
Operating profit
+5.2%
£452,509,000 £475,941,000
-
Profit before tax
+3.8%
£504,979,000 £524,412,000
-
Wages
+0.6%
£328,094,000 £329,933,000
Each % is (latest − prior) ÷ |prior| for the line item as filed. Periods don't have to be exactly 12 months apart — a long or short period (typical around incorporation or year-end changes) will distort the comparison. Lines a company doesn't report are omitted. About these numbers