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IRON MOUNTAIN (UK) PLC

#01478540 · Active · Incorporated 1980-02-11 (46y 6m) · Last filing 2026-07-12 (1mo ago)
Industrials · SIC 52103 · H Transportation & Storage · Full accounts
Accounts due 2027-06-30 (in 10 months) · Confirmation due 2027-01-14 (in 5 months) · No watchouts on the register

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Cash

£43m

+45.3% highest in 3 filed years

Net assets

£238m

-11.4% lowest in 3 filed years

Employees

438

-3.1% vs 2024

Profit before tax

-£32m

-99.4% lowest in 3 filed years

Accounts

3-year trend · Δ = latest vs prior filed period · latest reflected 2025-12-31

Metric Trend 2023-12-312024-12-312025-12-31 Δ vs prior
Turnover £228,631,000£240,862,000£251,661,000 +4.5%
Operating profit £40,218,000£13,561,000£5,182,000 -61.8%
Profit before tax £20,179,000-£16,114,000-£32,132,000 -99.4%
Net profit £20,276,000-£13,814,000-£30,590,000 -121.4%
Cash £22,566,000£29,290,000£42,563,000 +45.3%
Total assets less current liabilities £914,403,000£604,888,000£566,573,000 -6.3%
Net assets £281,913,000£268,099,000£237,509,000 -11.4%
Equity £281,913,000£268,099,000£237,509,000 -11.4%
Average employees 253452438 -3.1%
Wages £15,956,000£17,797,000£21,609,000 +21.4%
Directors' remuneration £485,000£629,000£453,000 -28%

Values shown as filed in the company's annual accounts. — indicates the figure wasn't present under that line item in that period. The Δ column is the change from the prior filed period as a percentage of |prior|; lines a company doesn't report show —. About these numbers

Ratios

Computed from the line items above — sparklines read oldest → newest

Ratio Trend 2023-12-312024-12-312025-12-31
Operating margin 17.6%5.6%2.1%
Net margin 8.9%-5.7%-12.2%
Return on capital employed 4.4%2.2%0.9%
Gearing (liabilities / total assets) —79.2%73.6%
Current ratio 1.33x——
Interest cover 1.13x0.29x0.12x

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.

Name history

Renamed 5 times since incorporation

  1. IRON MOUNTAIN (UK) PLC 2017-10-30 → present
  2. IRON MOUNTAIN (UK) LIMITED 2000-06-27 → 2017-10-30
  3. BRITISH DATA MANAGEMENT LIMITED 1997-07-21 → 2000-06-27
  4. BRITANNIA DATA MANAGEMENT LIMITED 1988-07-21 → 1997-07-21
  5. TELE-LINK ARCHIVES PLC 1985-01-02 → 1988-07-21
  6. HUNTERS LIMITED 1980-02-11 → 1985-01-02

Audit & accounting basis

Accounting basis
FRS 102
Auditor
Deloitte LLP
Audit opinion
Unqualified (clean)
Going concern
Affirmed

“In auditing the financial statements, we have concluded that the directors' use of the going concern basis of accounting in the preparation of the financial statements is appropriate. Based on the work we have performed, we have not identified any material uncertainties relating to events or conditions that, individually or collectively, may cast significant doubt on the company's ability to continue as a going concern for a period of at least twelve months from when the financial statements are authorised for issue.”

Group structure

  1. IRON MOUNTAIN (UK) PLC · parent
    1. Iron Mountain Poland Holdings Limited 100% · Cyprus · Records and information management
    2. Saracen Datastore Limited 100% · Great Britain · In liquidation
    3. Crozier Fine Arts Ltd 100% · Great Britain · Artwork Storage Records and information management
    4. DBJ Limited 100% · Jersey · Records and information management
    5. Haworth Group Holdings (UK) Limited 100% · Great Britain · In liquidation
    6. F.T.S. (Freight Forwarders) Limited 100% · Great Britain · In liquidation
    7. Bonded Services Acquisition Limited 100% · Great Britain · In liquidation
    8. Bonded Services Limited 100% · Great Britain · In liquidation
    9. Iron Mountain MDM Limited 100% · Great Britain · Dormant
    10. Recall Limited 100% · Great Britain · In liquidation
    11. CAS Health Limited 100% · Great Britain · Records and information management
    12. Iron Mountain Polska Sp z.o.o. 100% · Poland · Records and information management
    13. Iron Mountain Polska Services Sp Z.O.O. 100% · Poland · Records and Information Management
    14. Disaster Recovery Services Limite 100% · Great Britain · In Liquidation
    15. Global Logistics Worldwide Limited 100% · Great Britain · In Liquidation
    16. Bonded Services Group Limited 100% · Great Britain · In Liquidation
    17. Novo Group Limited 100% · Great Britain · In Liquidation
    18. Novo Holdings Limited 100% · Great Britain · In Liquidation
    19. Novo Overseas Limited 100% · Great Britain · In Liquidation
    20. F.T.S. (Great Britain) Limited 100% · Great Britain · In Liquidation
    21. Bonded Services International BV 100% · Great Britain · In Liquidation

Significant events

Auditor, going-concern and subsidiary information is drawn from the narrative of the latest annual accounts. About these numbers

People

3 active · 49 resigned

Name Role Appointed Born Nationality
VIRGO, John Michael Secretary 2020-05-18 — —
FORD, Nicholas Ben Director 2021-01-08 May 1983 British
MACKIE, Graeme Robert Director 2024-06-14 Sep 1970 British
Show 49 resigned officers
Name Role Appointed Resigned
DRYSDALE, Clive Douglas Secretary 1996-10-08 2004-03-06
FORDHAM, Andrew Secretary 2005-11-30 2008-03-31
HODGSON, Richard Secretary 2004-03-06 2005-04-30
LYON, Joseph Secretary 2008-02-01 2009-02-02
MORRIS, Ronald Michael Secretary 1995-05-09 1996-10-08
MOYNIHAN, Simon Patrick Secretary 2014-01-14 2020-05-18
PETERS, John Fabian Secretary — 1993-05-26
RADTKE, Kenneth Secretary 2005-04-30 2005-11-30
THOMAS, Christopher David George Secretary 2009-02-02 2014-01-14
VARAH, David John Raphael Secretary 1993-05-26 1995-05-09
BENNISON, Ronald Peter Director 1994-01-28 2003-02-03
BENSON, Gary Edward Director 1997-12-17 2000-11-15
CAMPBELL, Thomas Walter Director 2005-08-01 2009-04-14
CROWN, Stephen Maurice Director — 1996-10-08
DAY, Roderick Director 2008-07-15 2014-01-14
DE METZ, Geoffrey Director — 1994-01-28
DEMPSEY, Terence Patrick Director 1994-09-13 1996-12-31
DRYSDALE, Clive Douglas Director 1996-10-08 2004-03-06
DUALE, Marc Director 2007-03-09 2009-10-19
EDGE, Roderick Boris Clifford Director 1996-10-08 1997-09-30
EGLINTON, Peter Damian Director 2009-04-14 2012-12-12
GOLESWORTHY, Simon Paul Director 2009-10-19 2019-09-30
HILTON, Richard John Director 1994-01-28 1996-09-23
HODGSON, Richard Director 2004-02-27 2005-04-30
KEDDY, Patrick John Director 2012-12-12 2021-01-08
KEESHAN, Albert Luis Director 1995-11-27 1996-03-12
KENNY JR, John Francis Director 1999-01-04 2003-01-31
MACKIE, Graeme Robert Director 2019-11-30 2021-01-08
MAIR, Denise Margaret Director 1993-07-01 1995-09-29
MAKOWSKI, Richard Director 1997-02-10 2000-09-30
MARSHALL, Charlotte Helen Director 2014-01-14 2019-11-30
MCGUIGAN, Neil Simon Director — 1996-10-08
MORRIS, Ronald Michael Director 1992-01-13 1996-10-08
PETERS, John Fabian Director — 1993-05-26
PEVY, Alan Director — 1994-08-31
PIRIE, Ian Watson Director 1995-10-02 1996-12-31
PRICE, Phillip John Director 2006-03-24 2008-07-31
PROWSE, John Director 2004-02-27 2007-03-09
RADTKE, Kenneth Director 2003-01-31 2005-11-30
RAPERPORT, Hugh Simon Anthony Director 1992-06-29 1992-09-30
REESE, Charles Richard Director 1999-01-04 2003-01-31
ROSS, John Stuart Director 1995-10-27 2002-03-04
ROSS, John Stuart Director 1994-01-28 1994-09-13
SHEPLEY, Philip Ernest Director 2021-01-08 2024-06-14
SMITH, Nicholas Paul Director 1996-10-08 2004-07-29
STEPHENSON, David Director 1994-01-28 1994-06-06
THURMAN, John Lythall Director — 1993-10-06
VARAH, David John Raphael Director 1993-04-21 1995-05-09
WILTON-STEER, Mark Julian Director — 1994-04-27

Ownership

Persons with significant control

Name Kind Nature of control Notified Status
Iron Mountain Europe (Group) Limited Corporate entity Shares 75–100%, Voting 75–100%, Appoints directors 2017-10-04 Active
Iron Mountain Europe Plc Corporate entity Shares 75–100%, Voting 75–100%, Appoints directors 2016-11-18 Ceased 2017-10-04

Filing timeline

Last 20 of 322 total filings

Date Type Category Description
2026-07-12 AA accounts Accounts with accounts type full
2026-06-04 AD01 address Change registered office address company with date old address new address PDF
2026-06-03 AD01 address Change registered office address company with date old address new address PDF
2026-01-14 CS01 confirmation-statement Confirmation statement with no updates PDF
2025-08-06 MR01 mortgage Mortgage create with deed with charge number charge creation date PDF
2025-07-18 AA accounts Accounts with accounts type full
2025-07-17 MR01 mortgage Mortgage create with deed with charge number charge creation date PDF
2025-07-17 MR01 mortgage Mortgage create with deed with charge number charge creation date PDF
2025-01-07 CS01 confirmation-statement Confirmation statement with no updates PDF
2024-09-20 MR01 mortgage Mortgage create with deed with charge number charge creation date PDF
2024-07-07 AA accounts Accounts with accounts type full
2024-07-01 AP01 officers Appoint person director company with name date PDF
2024-06-28 TM01 officers Termination director company with name termination date PDF
2024-01-11 CS01 confirmation-statement Confirmation statement with updates PDF
2023-10-04 MR01 mortgage Mortgage create with deed with charge number charge creation date PDF
2023-07-13 AA accounts Accounts with accounts type full
2023-01-05 CS01 confirmation-statement Confirmation statement with no updates PDF
2022-07-06 AA accounts Accounts with accounts type full
2022-01-12 CS01 confirmation-statement Confirmation statement with no updates PDF
2021-07-10 AA accounts Accounts with accounts type full

Public-record activity

Raw counts from Companies House — last 12–24 months

Filings
5

last 12 months

Capital events
0

last 24 months

Officers appointed
0

last 12 months

Officers resigned
0

last 12 months

Direct counts from the register. No score, no rating — see the Filing timeline for the underlying events.

Official Companies House page