DH

DIPLOMA HOLDINGS PLC

Active

Company number 00256111

London, England · Incorporated 1 May 1931

10-11 Charterhouse Square, London, EC1M 6EE, England

Last updated on 11 September 2026

Activities of head offices · SIC 70100

Status
Active
Company age
95 years
Company type
Public limited
Accounts
Up to date
Total raised
—
Shares allotted
0
Latest round
31 March 2024

Company history

Previous company names

DIPLOMA INVESTMENTS LIMITED · 1 May 1931 – 31 December 1978

DIPLOMA P.L.C. · 31 December 1978 – 17 April 2000

Company overview

Diploma Holdings PLC is an active public limited company incorporated on 1 May 1931 and registered in England and Wales. Its registered office is at 10-11 Charterhouse Square, London, EC1M 6EE. The company’s principal activity is classified under SIC 70100.

It is a wholly owned subsidiary of Diploma Plc, which holds 75-100% of the shares and voting rights and the right to appoint and remove directors. There are no charges, no insolvency history and the company has never been liquidated.

As at the latest filings, the company has two directors: Jonathan David Thomson (appointed 16 May 2019) and Anna Louise Lawrence (appointed 30 May 2025). Anna Lawrence also acts as company secretary. The most recent full accounts, made up to 30 September 2025, were filed on 9 April 2026. The latest confirmation statement, with no updates, was filed on 2 March 2026 and relates to 24 February 2026. The next accounts are due by 31 March 2027.

Compliance

Annual accounts Up to date
Last filed
30 September 2025
Next due
31 March 2027
7 months left
Confirmation statement Up to date
Last filed
24 February 2026
Next due
10 March 2027
6 months left

Financial snapshot

Last accounts type
Full
Period end
30 September 2025

Detailed figures (assets, liabilities, net worth) are available in the full credit report.

Officers

No officers on record.

Persons with significant control

PS
Diploma Plc
Ownership Of Shares 75 To 100 Percent
Voting Rights 75 To 100 Percent
Right To Appoint And Remove Directors
6 April 2016

Funding

1 funding round
31 March 2024
Shares allotted · 0 shares allotted
—
Total (1 round, 0 shares)
—

Filing history

Accounts With Accounts Type Full
Accounts
9 April 2026 View
Confirmation Statement With No Updates
Confirmation Statement
2 March 2026 View
Termination Director Company With Name Termination Date
Officers
14 August 2025 View
Appoint Person Director Company With Name Date
Officers
14 August 2025 View
Termination Director Company With Name Termination Date
Officers
30 May 2025 View
Termination Secretary Company With Name Termination Date
Officers
30 May 2025 View
Appoint Person Director Company With Name Date
Officers
30 May 2025 View
Appoint Person Secretary Company With Name Date
Officers
30 May 2025 View
Accounts With Accounts Type Full
Accounts
3 April 2025 View
Confirmation Statement With Updates
Confirmation Statement
7 March 2025 View
Memorandum Articles
Incorporation
30 April 2024 View
Resolution
Resolution
30 April 2024 View
Accounts With Accounts Type Full
Accounts
16 April 2024 View
Capital Alter Shares Consolidation
Capital
12 April 2024 View
Change Person Director Company With Change Date
Officers
10 April 2024 View
Capital Allotment Shares
Capital
8 April 2024 View
Confirmation Statement With No Updates
Confirmation Statement
4 March 2024 View
Accounts With Accounts Type Full
Accounts
5 April 2023 View
Confirmation Statement With No Updates
Confirmation Statement
24 February 2023 View
Confirmation Statement With No Updates
Confirmation Statement
30 November 2022 View
Appoint Person Director Company With Name Date
Officers
1 November 2022 View
Termination Director Company With Name Termination Date
Officers
3 October 2022 View
Appoint Person Director Company With Name Date
Officers
3 October 2022 View
Accounts With Accounts Type Full
Accounts
1 April 2022 View
Change Registered Office Address Company With Date Old Address New Address
Address
5 January 2022 View
Confirmation Statement With No Updates
Confirmation Statement
1 December 2021 View
Accounts With Accounts Type Full
Accounts
26 March 2021 View
Confirmation Statement With No Updates
Confirmation Statement
30 November 2020 View
Termination Director Company With Name Termination Date
Officers
24 June 2020 View
Appoint Person Director Company With Name Date
Officers
24 June 2020 View
Termination Secretary Company With Name Termination Date
Officers
6 May 2020 View
Appoint Person Secretary Company With Name Date
Officers
6 May 2020 View
Accounts With Accounts Type Full
Accounts
9 April 2020 View
Confirmation Statement With No Updates
Confirmation Statement
2 December 2019 View
Appoint Person Director Company With Name Date
Officers
16 May 2019 View
Termination Director Company With Name Termination Date
Officers
16 May 2019 View
Accounts With Accounts Type Full
Accounts
1 April 2019 View
Change Person Director Company With Change Date
Officers
28 January 2019 View
Confirmation Statement With No Updates
Confirmation Statement
3 December 2018 View
Termination Director Company With Name Termination Date
Officers
29 August 2018 View
Appoint Person Director Company With Name Date
Officers
29 August 2018 View
Appoint Person Director Company With Name Date
Officers
10 May 2018 View
Termination Director Company With Name Termination Date
Officers
10 May 2018 View
Auditors Resignation Company
Auditors
19 April 2018 View
Accounts With Accounts Type Full
Accounts
8 March 2018 View
Confirmation Statement With No Updates
Confirmation Statement
30 November 2017 View
Accounts With Accounts Type Full
Accounts
31 March 2017 View
Confirmation Statement With Updates
Confirmation Statement
30 November 2016 View
Termination Director Company With Name Termination Date
Officers
4 April 2016 View
Accounts With Accounts Type Full
Accounts
24 March 2016 View
Annual Return Company With Made Up Date Full List Shareholders
Annual Return
30 November 2015 View
Accounts With Accounts Type Full
Accounts
16 March 2015 View
Annual Return Company With Made Up Date Full List Shareholders
Annual Return
1 December 2014 View
Accounts With Accounts Type Full
Accounts
2 April 2014 View
Annual Return Company With Made Up Date Full List Shareholders
Annual Return
2 December 2013 View
Accounts With Accounts Type Full
Accounts
5 April 2013 View
Termination Secretary Company With Name
Officers
23 January 2013 View
Appoint Person Secretary Company With Name
Officers
23 January 2013 View
Change Person Director Company With Change Date
Officers
19 December 2012 View
Annual Return Company With Made Up Date Full List Shareholders
Annual Return
4 December 2012 View
Legacy
Mortgage
18 October 2012 View
Accounts With Accounts Type Full
Accounts
4 April 2012 View
Annual Return Company With Made Up Date Full List Shareholders
Annual Return
14 December 2011 View
Accounts With Accounts Type Full
Accounts
2 March 2011 View
Legacy
Mortgage
24 February 2011 View
Annual Return Company With Made Up Date Full List Shareholders
Annual Return
21 December 2010 View
Legacy
Mortgage
14 October 2010 View
Accounts With Accounts Type Full
Accounts
31 January 2010 View
Annual Return Company With Made Up Date Full List Shareholders
Annual Return
17 December 2009 View
Change Person Secretary Company With Change Date
Officers
19 October 2009 View
Change Person Director Company With Change Date
Officers
9 October 2009 View
Change Person Director Company With Change Date
Officers
9 October 2009 View
Change Person Director Company With Change Date
Officers
9 October 2009 View
Accounts With Accounts Type Full
Accounts
25 March 2009 View
Legacy
Annual Return
1 December 2008 View
Accounts With Accounts Type Full
Accounts
29 January 2008 View
Legacy
Address
2 January 2008 View
Legacy
Address
2 January 2008 View
Legacy
Address
2 January 2008 View
Legacy
Annual Return
2 January 2008 View
Legacy
Address
19 July 2007 View
Accounts With Accounts Type Full
Accounts
2 May 2007 View
Legacy
Annual Return
14 December 2006 View
Accounts With Accounts Type Full
Accounts
18 January 2006 View
Legacy
Annual Return
14 December 2005 View
Accounts With Accounts Type Full
Accounts
18 April 2005 View
Legacy
Annual Return
24 December 2004 View
Accounts With Accounts Type Full
Accounts
4 May 2004 View
Legacy
Annual Return
20 January 2004 View
Accounts With Accounts Type Full
Accounts
3 May 2003 View
Auditors Resignation Company
Auditors
7 April 2003 View
Legacy
Annual Return
10 January 2003 View
Accounts With Accounts Type Full
Accounts
2 May 2002 View
Legacy
Annual Return
22 February 2002 View
Legacy
Officers
24 January 2002 View
Legacy
Officers
27 November 2001 View
Legacy
Officers
27 November 2001 View
Legacy
Mortgage
28 July 2001 View
Legacy
Officers
17 July 2001 View
Legacy
Officers
17 July 2001 View
Legacy
Officers
16 May 2001 View
Legacy
Officers
16 May 2001 View
Accounts With Accounts Type Full
Accounts
2 May 2001 View
Legacy
Annual Return
22 January 2001 View
Legacy
Capital
31 May 2000 View
Memorandum Articles
Incorporation
31 May 2000 View
Certificate Change Of Name Company
Change Of Name
17 April 2000 View
Resolution
Resolution
17 April 2000 View
Resolution
Resolution
17 April 2000 View
Resolution
Resolution
17 April 2000 View
Resolution
Resolution
17 April 2000 View
Resolution
Resolution
17 April 2000 View
Legacy
Capital
17 April 2000 View
Certificate Capital Reduction Issued Capital
Capital
17 April 2000 View
Accounts With Accounts Type Full Group
Accounts
28 February 2000 View
Legacy
Annual Return
22 February 2000 View
Resolution
Resolution
31 January 2000 View
Legacy
Address
14 December 1999 View
Accounts With Accounts Type Full Group
Accounts
15 July 1999 View
Legacy
Capital
12 May 1999 View
Statement Of Affairs
Miscellaneous
12 May 1999 View
Legacy
Annual Return
4 March 1999 View
Resolution
Resolution
21 January 1999 View
Resolution
Resolution
21 January 1999 View
Resolution
Resolution
21 January 1999 View
Memorandum Articles
Incorporation
21 January 1999 View
Legacy
Capital
11 December 1998 View
Legacy
Officers
16 November 1998 View
Legacy
Capital
14 October 1998 View
Auditors Resignation Company
Auditors
25 August 1998 View
Legacy
Address
2 July 1998 View
Accounts With Accounts Type Full Group
Accounts
24 April 1998 View
Legacy
Annual Return
2 March 1998 View
Legacy
Officers
6 February 1998 View
Legacy
Officers
6 February 1998 View
Legacy
Officers
26 January 1998 View
Legacy
Officers
26 January 1998 View
Legacy
Capital
23 January 1998 View
Legacy
Officers
12 January 1998 View
Legacy
Officers
20 October 1997 View
Legacy
Officers
14 October 1997 View
Legacy
Officers
14 October 1997 View
Legacy
Officers
9 July 1997 View
Accounts With Accounts Type Full Group
Accounts
9 April 1997 View
Resolution
Resolution
17 February 1997 View
Resolution
Resolution
17 February 1997 View
Legacy
Annual Return
11 February 1997 View
Legacy
Officers
11 February 1997 View
Legacy
Officers
19 November 1996 View
Legacy
Capital
5 September 1996 View
Resolution
Resolution
1 March 1996 View
Resolution
Resolution
1 March 1996 View
Legacy
Annual Return
21 February 1996 View
Auditors Resignation Company
Auditors
16 January 1996 View
Accounts With Accounts Type Full Group
Accounts
12 December 1995 View
Legacy
Officers
4 December 1995 View
Legacy
Officers
4 December 1995 View
Legacy
Officers
11 October 1995 View
Legacy
Officers
1 May 1995 View
Legacy
Officers
1 May 1995 View
Legacy
Annual Return
22 February 1995 View
Resolution
Resolution
18 January 1995 View
Accounts With Accounts Type Full Group
Accounts
18 December 1994 View
Legacy
Officers
7 October 1994 View
Legacy
Officers
11 August 1994 View
Legacy
Officers
7 July 1994 View
Legacy
Officers
6 May 1994 View
Accounts With Accounts Type Full Group
Accounts
12 April 1994 View
Legacy
Capital
22 March 1994 View
Legacy
Annual Return
17 February 1994 View
Legacy
Capital
31 January 1994 View
Legacy
Capital
21 January 1994 View
Resolution
Resolution
21 January 1994 View
Resolution
Resolution
21 January 1994 View
Resolution
Resolution
21 January 1994 View
Legacy
Officers
8 January 1994 View
Legacy
Officers
16 December 1993 View
Legacy
Officers
24 November 1993 View
Legacy
Officers
11 November 1993 View
Resolution
Resolution
20 July 1993 View
Resolution
Resolution
20 July 1993 View
Legacy
Annual Return
23 February 1993 View
Legacy
Officers
19 January 1993 View
Accounts With Accounts Type Full Group
Accounts
18 December 1992 View
Legacy
Capital
4 September 1992 View
Statement Of Affairs
Miscellaneous
4 September 1992 View
Legacy
Capital
26 August 1992 View
Legacy
Capital
4 June 1992 View
Accounts With Accounts Type Full Group
Accounts
22 May 1992 View
Legacy
Annual Return
13 February 1992 View
Legacy
Officers
4 September 1991 View
Accounts With Accounts Type Full Group
Accounts
7 June 1991 View
Legacy
Address
30 April 1991 View
Legacy
Capital
7 April 1991 View
Legacy
Annual Return
22 March 1991 View
Legacy
Officers
15 January 1991 View
Legacy
Officers
1 August 1990 View
Accounts With Accounts Type Full
Accounts
21 May 1990 View
Legacy
Annual Return
23 February 1990 View
Legacy
Officers
15 January 1990 View
Legacy
Officers
25 August 1989 View
Accounts With Accounts Type Full
Accounts
10 May 1989 View
Legacy
Annual Return
21 February 1989 View
Legacy
Capital
23 August 1988 View
Legacy
Capital
6 June 1988 View
Accounts With Accounts Type Full Group
Accounts
6 May 1988 View
Resolution
Resolution
26 April 1988 View
Resolution
Resolution
26 April 1988 View
Legacy
Annual Return
4 March 1988 View
Legacy
Accounts
4 March 1987 View
Legacy
Annual Return
25 February 1987 View
Selection Of Documents Registered Before January 1987
Historical
1 January 1987 View
Accounts With Accounts Type Full
Accounts
20 December 1986 View
Accounts With Made Up Date
Accounts
11 February 1986 View
Accounts With Made Up Date
Accounts
16 May 1985 View
Accounts With Made Up Date
Accounts
27 June 1984 View
Accounts With Made Up Date
Accounts
22 March 1983 View
Accounts With Made Up Date
Accounts
14 May 1982 View
Certificate Re Registration Private To Public Limited Company
Change Of Name
22 March 1982 View
Accounts With Made Up Date
Accounts
19 March 1981 View
Accounts With Made Up Date
Accounts
2 February 1980 View
Accounts With Made Up Date
Accounts
27 January 1979 View
Accounts With Made Up Date
Accounts
30 January 1978 View
Accounts With Made Up Date
Accounts
28 September 1977 View
Accounts With Made Up Date
Accounts
6 May 1977 View
Certificate Change Of Name Company
Change Of Name
9 September 1966 View
Incorporation Company
Incorporation
1 May 1931 View
Miscellaneous
Miscellaneous
1 May 1931 View

Risk at a glance

  • Company active
  • Accounts up to date
  • Confirmation statement up to date
  • No insolvency history
  • No registered charges
  • Credit score
  • Recommended limit
  • Payment risk

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