Background WavePink WaveYellow Wave

DIPLOMA HOLDINGS PLC (00256111)

DIPLOMA HOLDINGS PLC (00256111) is an active UK company. incorporated on 1 May 1931. with registered office in London. The company operates in the Professional, Scientific and Technical Activities sector, engaged in activities of head offices. DIPLOMA HOLDINGS PLC has been registered for 94 years.

Company Number
00256111
Status
active
Type
plc
Incorporated
1 May 1931
Age
94 years
Address
10-11 Charterhouse Square, London, EC1M 6EE
Industry Sector
Professional, Scientific and Technical Activities
Business Activity
Activities of head offices
SIC Codes
70100

Meet the innovation, Meet the Corpium App.

Search a Company or Director

Introduction
Watch Company
D

DIPLOMA HOLDINGS PLC

DIPLOMA HOLDINGS PLC is an active company incorporated on 1 May 1931 with the registered office located in London. The company operates in the Professional, Scientific and Technical Activities sector, specifically engaged in activities of head offices. DIPLOMA HOLDINGS PLC was registered 94 years ago.(SIC: 70100)

Status

active

Active since 94 years ago

Company No

00256111

PLC Company

Age

94 Years

Incorporated 1 May 1931

Size

N/A

Accounts

ARD: 30/9

Up to Date

9 days left

Last Filed

Made up to 30 September 2024 (1 year ago)
Submitted on 3 April 2025 (11 months ago)
Period: 1 October 2023 - 30 September 2024(13 months)
Type: Full Accounts

Next Due

Due by 31 March 2026
Period: 1 October 2024 - 30 September 2025

Confirmation Statement

Up to Date

11 months left

Last Filed

Made up to 24 February 2026 (1 month ago)
Submitted on 2 March 2026 (Just now)

Next Due

Due by 10 March 2027
For period ending 24 February 2027

Previous Company Names

DIPLOMA P.L.C.
From: 31 December 1978To: 17 April 2000
DIPLOMA INVESTMENTS LIMITED
From: 1 May 1931To: 31 December 1978
Contact
Address

10-11 Charterhouse Square London, EC1M 6EE,

Previous Addresses

12 Charterhouse Square London EC1M 6AX
From: 1 May 1931To: 5 January 2022
Timeline

19 key events • 1931 - 2025

Funding Officers Ownership
Company Founded
Apr 31
Director Left
Apr 16
Director Left
May 18
Director Joined
May 18
Director Joined
Aug 18
Director Left
Aug 18
Director Left
May 19
Director Joined
May 19
Director Joined
Jun 20
Director Left
Jun 20
Director Joined
Oct 22
Director Left
Oct 22
Director Joined
Oct 22
Funding Round
Apr 24
Share Issue
Apr 24
Director Joined
May 25
Director Left
May 25
Director Joined
Aug 25
Director Left
Aug 25
2
Funding
16
Officers
0
Ownership
0
Accounts
Capital Table
People

Officers

0

Fundings
Financials
Latest Activities

Filing History

227

Confirmation Statement With No Updates
2 March 2026
CS01Confirmation Statement
Appoint Person Director Company With Name Date
14 August 2025
AP01Appointment of Director
Termination Director Company With Name Termination Date
14 August 2025
TM01Termination of Director
Appoint Person Secretary Company With Name Date
30 May 2025
AP03Appointment of Secretary
Appoint Person Director Company With Name Date
30 May 2025
AP01Appointment of Director
Termination Secretary Company With Name Termination Date
30 May 2025
TM02Termination of Secretary
Termination Director Company With Name Termination Date
30 May 2025
TM01Termination of Director
Accounts With Accounts Type Full
3 April 2025
AAAnnual Accounts
Confirmation Statement With Updates
7 March 2025
CS01Confirmation Statement
Resolution
30 April 2024
RESOLUTIONSResolutions
Memorandum Articles
30 April 2024
MAMA
Accounts With Accounts Type Full
16 April 2024
AAAnnual Accounts
Capital Alter Shares Consolidation
12 April 2024
SH02Allotment of Shares (prescribed particulars)
Change Person Director Company With Change Date
10 April 2024
CH01Change of Director Details
Capital Allotment Shares
8 April 2024
SH01Allotment of Shares
Confirmation Statement With No Updates
4 March 2024
CS01Confirmation Statement
Accounts With Accounts Type Full
5 April 2023
AAAnnual Accounts
Confirmation Statement With No Updates
24 February 2023
CS01Confirmation Statement
Confirmation Statement With No Updates
30 November 2022
CS01Confirmation Statement
Appoint Person Director Company With Name Date
1 November 2022
AP01Appointment of Director
Appoint Person Director Company With Name Date
3 October 2022
AP01Appointment of Director
Termination Director Company With Name Termination Date
3 October 2022
TM01Termination of Director
Accounts With Accounts Type Full
1 April 2022
AAAnnual Accounts
Change Registered Office Address Company With Date Old Address New Address
5 January 2022
AD01Change of Registered Office Address
Confirmation Statement With No Updates
1 December 2021
CS01Confirmation Statement
Accounts With Accounts Type Full
26 March 2021
AAAnnual Accounts
Confirmation Statement With No Updates
30 November 2020
CS01Confirmation Statement
Appoint Person Director Company With Name Date
24 June 2020
AP01Appointment of Director
Termination Director Company With Name Termination Date
24 June 2020
TM01Termination of Director
Appoint Person Secretary Company With Name Date
6 May 2020
AP03Appointment of Secretary
Termination Secretary Company With Name Termination Date
6 May 2020
TM02Termination of Secretary
Accounts With Accounts Type Full
9 April 2020
AAAnnual Accounts
Confirmation Statement With No Updates
2 December 2019
CS01Confirmation Statement
Termination Director Company With Name Termination Date
16 May 2019
TM01Termination of Director
Appoint Person Director Company With Name Date
16 May 2019
AP01Appointment of Director
Accounts With Accounts Type Full
1 April 2019
AAAnnual Accounts
Change Person Director Company With Change Date
28 January 2019
CH01Change of Director Details
Confirmation Statement With No Updates
3 December 2018
CS01Confirmation Statement
Appoint Person Director Company With Name Date
29 August 2018
AP01Appointment of Director
Termination Director Company With Name Termination Date
29 August 2018
TM01Termination of Director
Termination Director Company With Name Termination Date
10 May 2018
TM01Termination of Director
Appoint Person Director Company With Name Date
10 May 2018
AP01Appointment of Director
Auditors Resignation Company
19 April 2018
AUDAUD
Accounts With Accounts Type Full
8 March 2018
AAAnnual Accounts
Confirmation Statement With No Updates
30 November 2017
CS01Confirmation Statement
Accounts With Accounts Type Full
31 March 2017
AAAnnual Accounts
Confirmation Statement With Updates
30 November 2016
CS01Confirmation Statement
Termination Director Company With Name Termination Date
4 April 2016
TM01Termination of Director
Accounts With Accounts Type Full
24 March 2016
AAAnnual Accounts
Annual Return Company With Made Up Date Full List Shareholders
30 November 2015
AR01AR01
Accounts With Accounts Type Full
16 March 2015
AAAnnual Accounts
Annual Return Company With Made Up Date Full List Shareholders
1 December 2014
AR01AR01
Accounts With Accounts Type Full
2 April 2014
AAAnnual Accounts
Annual Return Company With Made Up Date Full List Shareholders
2 December 2013
AR01AR01
Accounts With Accounts Type Full
5 April 2013
AAAnnual Accounts
Appoint Person Secretary Company With Name
23 January 2013
AP03Appointment of Secretary
Termination Secretary Company With Name
23 January 2013
TM02Termination of Secretary
Change Person Director Company With Change Date
19 December 2012
CH01Change of Director Details
Annual Return Company With Made Up Date Full List Shareholders
4 December 2012
AR01AR01
Legacy
18 October 2012
MG02MG02
Accounts With Accounts Type Full
4 April 2012
AAAnnual Accounts
Annual Return Company With Made Up Date Full List Shareholders
14 December 2011
AR01AR01
Accounts With Accounts Type Full
2 March 2011
AAAnnual Accounts
Legacy
24 February 2011
MG04MG04
Annual Return Company With Made Up Date Full List Shareholders
21 December 2010
AR01AR01
Legacy
14 October 2010
MG01MG01
Accounts With Accounts Type Full
31 January 2010
AAAnnual Accounts
Annual Return Company With Made Up Date Full List Shareholders
17 December 2009
AR01AR01
Change Person Secretary Company With Change Date
19 October 2009
CH03Change of Secretary Details
Change Person Director Company With Change Date
9 October 2009
CH01Change of Director Details
Change Person Director Company With Change Date
9 October 2009
CH01Change of Director Details
Change Person Director Company With Change Date
9 October 2009
CH01Change of Director Details
Accounts With Accounts Type Full
25 March 2009
AAAnnual Accounts
Legacy
1 December 2008
363aAnnual Return
Accounts With Accounts Type Full
29 January 2008
AAAnnual Accounts
Legacy
2 January 2008
363aAnnual Return
Legacy
2 January 2008
190190
Legacy
2 January 2008
353353
Legacy
2 January 2008
287Change of Registered Office
Legacy
19 July 2007
287Change of Registered Office
Accounts With Accounts Type Full
2 May 2007
AAAnnual Accounts
Legacy
14 December 2006
363aAnnual Return
Accounts With Accounts Type Full
18 January 2006
AAAnnual Accounts
Legacy
14 December 2005
363aAnnual Return
Accounts With Accounts Type Full
18 April 2005
AAAnnual Accounts
Legacy
24 December 2004
363sAnnual Return (shuttle)
Accounts With Accounts Type Full
4 May 2004
AAAnnual Accounts
Legacy
20 January 2004
363sAnnual Return (shuttle)
Accounts With Accounts Type Full
3 May 2003
AAAnnual Accounts
Auditors Resignation Company
7 April 2003
AUDAUD
Legacy
10 January 2003
363sAnnual Return (shuttle)
Accounts With Accounts Type Full
2 May 2002
AAAnnual Accounts
Legacy
22 February 2002
363sAnnual Return (shuttle)
Legacy
24 January 2002
288bResignation of Director or Secretary
Legacy
27 November 2001
288bResignation of Director or Secretary
Legacy
27 November 2001
288bResignation of Director or Secretary
Legacy
28 July 2001
403aParticulars of Charge Subject to s859A
Legacy
17 July 2001
288aAppointment of Director or Secretary
Legacy
17 July 2001
288bResignation of Director or Secretary
Legacy
16 May 2001
288cChange of Particulars
Legacy
16 May 2001
288cChange of Particulars
Accounts With Accounts Type Full
2 May 2001
AAAnnual Accounts
Legacy
22 January 2001
363sAnnual Return (shuttle)
Memorandum Articles
31 May 2000
MEM/ARTSMEM/ARTS
Legacy
31 May 2000
88(2)O88(2)O
Certificate Capital Reduction Issued Capital
17 April 2000
CERT15CERT15
Legacy
17 April 2000
OC425OC425
Resolution
17 April 2000
RESOLUTIONSResolutions
Resolution
17 April 2000
RESOLUTIONSResolutions
Resolution
17 April 2000
RESOLUTIONSResolutions
Resolution
17 April 2000
RESOLUTIONSResolutions
Resolution
17 April 2000
RESOLUTIONSResolutions
Certificate Change Of Name Company
17 April 2000
CERTNMCertificate of Incorporation on Change of Name
Accounts With Accounts Type Full Group
28 February 2000
AAAnnual Accounts
Legacy
22 February 2000
363sAnnual Return (shuttle)
Resolution
31 January 2000
RESOLUTIONSResolutions
Legacy
14 December 1999
353a353a
Accounts With Accounts Type Full Group
15 July 1999
AAAnnual Accounts
Statement Of Affairs
12 May 1999
SASA
Legacy
12 May 1999
88(2)R88(2)R
Legacy
4 March 1999
363sAnnual Return (shuttle)
Memorandum Articles
21 January 1999
MEM/ARTSMEM/ARTS
Resolution
21 January 1999
RESOLUTIONSResolutions
Resolution
21 January 1999
RESOLUTIONSResolutions
Resolution
21 January 1999
RESOLUTIONSResolutions
Legacy
11 December 1998
169169
Legacy
16 November 1998
288cChange of Particulars
Legacy
14 October 1998
169169
Auditors Resignation Company
25 August 1998
AUDAUD
Legacy
2 July 1998
353a353a
Accounts With Accounts Type Full Group
24 April 1998
AAAnnual Accounts
Legacy
2 March 1998
363sAnnual Return (shuttle)
Legacy
6 February 1998
288cChange of Particulars
Legacy
6 February 1998
288cChange of Particulars
Legacy
26 January 1998
288cChange of Particulars
Legacy
26 January 1998
288cChange of Particulars
Legacy
23 January 1998
169169
Legacy
12 January 1998
288aAppointment of Director or Secretary
Legacy
20 October 1997
288cChange of Particulars
Legacy
14 October 1997
288cChange of Particulars
Legacy
14 October 1997
288cChange of Particulars
Legacy
9 July 1997
288cChange of Particulars
Accounts With Accounts Type Full Group
9 April 1997
AAAnnual Accounts
Resolution
17 February 1997
RESOLUTIONSResolutions
Resolution
17 February 1997
RESOLUTIONSResolutions
Legacy
11 February 1997
288cChange of Particulars
Legacy
11 February 1997
363sAnnual Return (shuttle)
Legacy
19 November 1996
288cChange of Particulars
Legacy
5 September 1996
88(2)R88(2)R
Resolution
1 March 1996
RESOLUTIONSResolutions
Resolution
1 March 1996
RESOLUTIONSResolutions
Legacy
21 February 1996
363sAnnual Return (shuttle)
Auditors Resignation Company
16 January 1996
AUDAUD
Accounts With Accounts Type Full Group
12 December 1995
AAAnnual Accounts
Legacy
4 December 1995
288288
Legacy
4 December 1995
288288
Legacy
11 October 1995
288288
Legacy
1 May 1995
288288
Legacy
1 May 1995
288288
Legacy
22 February 1995
363sAnnual Return (shuttle)
Resolution
18 January 1995
RESOLUTIONSResolutions
Accounts With Accounts Type Full Group
18 December 1994
AAAnnual Accounts
Legacy
7 October 1994
288288
Legacy
11 August 1994
288288
Legacy
7 July 1994
288288
Legacy
6 May 1994
288288
Accounts With Accounts Type Full Group
12 April 1994
AAAnnual Accounts
Legacy
22 March 1994
88(2)R88(2)R
Legacy
17 February 1994
363sAnnual Return (shuttle)
Legacy
31 January 1994
88(2)R88(2)R
Resolution
21 January 1994
RESOLUTIONSResolutions
Resolution
21 January 1994
RESOLUTIONSResolutions
Resolution
21 January 1994
RESOLUTIONSResolutions
Legacy
21 January 1994
122122
Legacy
8 January 1994
288288
Legacy
16 December 1993
288288
Legacy
24 November 1993
288288
Legacy
11 November 1993
288288
Resolution
20 July 1993
RESOLUTIONSResolutions
Resolution
20 July 1993
RESOLUTIONSResolutions
Legacy
23 February 1993
363sAnnual Return (shuttle)
Legacy
19 January 1993
288288
Accounts With Accounts Type Full Group
18 December 1992
AAAnnual Accounts
Statement Of Affairs
4 September 1992
SASA
Legacy
4 September 1992
88(2)O88(2)O
Legacy
26 August 1992
88(2)P88(2)P
Legacy
4 June 1992
88(2)R88(2)R
Accounts With Accounts Type Full Group
22 May 1992
AAAnnual Accounts
Legacy
13 February 1992
363b363b
Legacy
4 September 1991
288288
Accounts With Accounts Type Full Group
7 June 1991
AAAnnual Accounts
Legacy
30 April 1991
353a353a
Legacy
7 April 1991
88(2)R88(2)R
Legacy
22 March 1991
363aAnnual Return
Legacy
15 January 1991
288288
Legacy
1 August 1990
288288
Accounts With Accounts Type Full
21 May 1990
AAAnnual Accounts
Legacy
23 February 1990
363363
Legacy
15 January 1990
288288
Legacy
25 August 1989
288288
Accounts With Accounts Type Full
10 May 1989
AAAnnual Accounts
Legacy
21 February 1989
363363
Legacy
23 August 1988
169169
Legacy
6 June 1988
122122
Accounts With Accounts Type Full Group
6 May 1988
AAAnnual Accounts
Resolution
26 April 1988
RESOLUTIONSResolutions
Resolution
26 April 1988
RESOLUTIONSResolutions
Legacy
4 March 1988
363363
Legacy
4 March 1987
225(1)225(1)
Legacy
25 February 1987
363363
Selection Of Documents Registered Before January 1987
1 January 1987
PRE87PRE87
Accounts With Accounts Type Full
20 December 1986
AAAnnual Accounts
Accounts With Made Up Date
11 February 1986
AAAnnual Accounts
Accounts With Made Up Date
16 May 1985
AAAnnual Accounts
Accounts With Made Up Date
27 June 1984
AAAnnual Accounts
Accounts With Made Up Date
22 March 1983
AAAnnual Accounts
Accounts With Made Up Date
14 May 1982
AAAnnual Accounts
Certificate Re Registration Private To Public Limited Company
22 March 1982
CERT5CERT5
Accounts With Made Up Date
19 March 1981
AAAnnual Accounts
Accounts With Made Up Date
2 February 1980
AAAnnual Accounts
Accounts With Made Up Date
27 January 1979
AAAnnual Accounts
Accounts With Made Up Date
30 January 1978
AAAnnual Accounts
Accounts With Made Up Date
28 September 1977
AAAnnual Accounts
Accounts With Made Up Date
6 May 1977
AAAnnual Accounts
Certificate Change Of Name Company
9 September 1966
CERTNMCertificate of Incorporation on Change of Name
Incorporation Company
1 May 1931
NEWINCIncorporation
Miscellaneous
1 May 1931
MISCMISC