DIPLOMA HOLDINGS PLC

Company summary

Company number: 00256111
Status: ACTIVE
Incorporated / age: 1 May 193195 years
Registered office: 10-11 Charterhouse Square, London, EC1M 6EE, England
Accounts due: 31 March 2027
Confirmation statement due: 10 March 2027
Active officers: 4
Outstanding charges: 0

Sourced from Companies House, retrieved 20 September 2026 at 17:42 UTC. This is public register information, not a credit or legal assessment.

View this company on the Companies House register

Company type
Public limited company
Address
10-11 Charterhouse Square, London, EC1M 6EE, England
Nature of business
Activities of head offices
Previous company names
DIPLOMA P.L.C.
DIPLOMA INVESTMENTS LIMITED

Officer details

Name	Role	Appointed On	Resigned On	Country of Residence	Date of Birth	Address
LAWRENCE, Anna ACTIVE	Secretary	30 May 2025				10-11, Charterhouse Square, London, EC1M 6EE, England
LAWRENCE, Anna Louise ACTIVE	Director	30 May 2025		England	May 1979	10-11, Charterhouse Square, London, EC1M 6EE, England
NG, Wilson ACTIVE	Director	14 Aug 2025		England	September 1981	10-11, Charterhouse Square, London, EC1M 6EE, England
THOMSON, Jonathan David ACTIVE	Director	16 May 2019		England	August 1972	10-11, Charterhouse Square, London, EC1M 6EE, England
GALLAGHER, Anthony James RESIGNED	Secretary	16 Jan 2013	05 May 2020			12 Charterhouse Square, London, EC1M 6AX
LINGWOOD, Nigel Peter RESIGNED	Secretary	03 Jul 2001	16 Jan 2013			12 Charterhouse Square, London, EC1M 6AX
MORRISON, John RESIGNED	Secretary	05 May 2020	30 May 2025			10-11, Charterhouse Square, London, EC1M 6EE, England
PARKINSON, Andrew Michael Reay RESIGNED	Secretary		03 Jul 2001			Tadlow House, Tadlow, Royston, Hertfordshire, SG8 0EL
DAVIES, Christopher Mark RESIGNED	Director	01 Nov 2022	13 Aug 2025	England	March 1970	10-11, Charterhouse Square, London, EC1M 6EE, England
GIBBES, Barbara RESIGNED	Director	22 Jun 2020	30 Sep 2022	England	July 1975	10-11, Charterhouse Square, London, EC1M 6EE, England
HENDERSON, John Iain RESIGNED	Director	06 Jan 1998	31 Mar 2016	United Kingdom	January 1956	12 Charterhouse Square, London, EC1M 6AX
INGRAM, Richard John RESIGNED	Director	08 May 2018	28 Aug 2018	United Kingdom	April 1963	12 Charterhouse Square, London, EC1M 6AX
LINGWOOD, Nigel Peter RESIGNED	Director	03 Jul 2001	22 Jun 2020	England	March 1959	12 Charterhouse Square, London, EC1M 6AX
LORD STEWARTBY, Bernard Harold Ian Halley, Lord Stewartby RESIGNED	Director		21 Sep 2001		August 1935	20 Bunhill Row, London, EC1Y 8LP
MORRISON, John RESIGNED	Director	01 Oct 2022	30 May 2025	England	October 1984	10-11, Charterhouse Square, London, EC1M 6EE, England
NICHOLAS, John Edward RESIGNED	Director	28 Aug 2018	16 May 2019	Portugal	August 1956	12 Charterhouse Square, London, EC1M 6AX
PARKINSON, Andrew Michael Reay RESIGNED	Director		03 Jul 2001		December 1942	Tadlow House, Tadlow, Royston, Hertfordshire, SG8 0EL
REID, William RESIGNED	Director	01 Aug 1994	21 Sep 2001		November 1937	Baykers Lamb Lane, Sible Hedingham, Halstead, Essex, CO9 3RS
THOMAS, Aubrey John Christopher RESIGNED	Director		10 Jan 2002		December 1930	Stirtloe House Stirtloe, Huntingdon, Cambridgeshire, PE18 9XW
THOMPSON, Bruce Mckenzie RESIGNED	Director	03 Oct 1994	08 May 2018	England	April 1955	12 Charterhouse Square, London, EC1M 6AX
WALKER, Barry Matthew RESIGNED	Director	08 Jan 1993	28 Oct 1993		August 1939	41 Ripplevale Grove, Islington, London, N1 1HS

LAWRENCE, Anna ACTIVE
Role: Secretary
Appointed on: 30 May 2025
Address: 10-11, Charterhouse Square, London, EC1M 6EE, England

LAWRENCE, Anna Louise ACTIVE
Role: Director
Appointed on: 30 May 2025
Country of Residence: England
Date of birth: May 1979
Address: 10-11, Charterhouse Square, London, EC1M 6EE, England

NG, Wilson ACTIVE
Role: Director
Appointed on: 14 Aug 2025
Country of Residence: England
Date of birth: September 1981
Address: 10-11, Charterhouse Square, London, EC1M 6EE, England

THOMSON, Jonathan David ACTIVE
Role: Director
Appointed on: 16 May 2019
Country of Residence: England
Date of birth: August 1972
Address: 10-11, Charterhouse Square, London, EC1M 6EE, England

GALLAGHER, Anthony James RESIGNED
Role: Secretary
Appointed on: 16 Jan 2013
Resigned on: 05 May 2020
Address: 12 Charterhouse Square, London, EC1M 6AX

LINGWOOD, Nigel Peter RESIGNED
Role: Secretary
Appointed on: 03 Jul 2001
Resigned on: 16 Jan 2013
Address: 12 Charterhouse Square, London, EC1M 6AX

MORRISON, John RESIGNED
Role: Secretary
Appointed on: 05 May 2020
Resigned on: 30 May 2025
Address: 10-11, Charterhouse Square, London, EC1M 6EE, England

PARKINSON, Andrew Michael Reay RESIGNED
Role: Secretary
Appointed on:
Resigned on: 03 Jul 2001
Address: Tadlow House, Tadlow, Royston, Hertfordshire, SG8 0EL

DAVIES, Christopher Mark RESIGNED
Role: Director
Appointed on: 01 Nov 2022
Resigned on: 13 Aug 2025
Country of Residence: England
Date of birth: March 1970
Address: 10-11, Charterhouse Square, London, EC1M 6EE, England

GIBBES, Barbara RESIGNED
Role: Director
Appointed on: 22 Jun 2020
Resigned on: 30 Sep 2022
Country of Residence: England
Date of birth: July 1975
Address: 10-11, Charterhouse Square, London, EC1M 6EE, England

HENDERSON, John Iain RESIGNED
Role: Director
Appointed on: 06 Jan 1998
Resigned on: 31 Mar 2016
Country of Residence: United Kingdom
Date of birth: January 1956
Address: 12 Charterhouse Square, London, EC1M 6AX

INGRAM, Richard John RESIGNED
Role: Director
Appointed on: 08 May 2018
Resigned on: 28 Aug 2018
Country of Residence: United Kingdom
Date of birth: April 1963
Address: 12 Charterhouse Square, London, EC1M 6AX

LINGWOOD, Nigel Peter RESIGNED
Role: Director
Appointed on: 03 Jul 2001
Resigned on: 22 Jun 2020
Country of Residence: England
Date of birth: March 1959
Address: 12 Charterhouse Square, London, EC1M 6AX

LORD STEWARTBY, Bernard Harold Ian Halley, Lord Stewartby RESIGNED
Role: Director
Appointed on:
Resigned on: 21 Sep 2001
Date of birth: August 1935
Address: 20 Bunhill Row, London, EC1Y 8LP

MORRISON, John RESIGNED
Role: Director
Appointed on: 01 Oct 2022
Resigned on: 30 May 2025
Country of Residence: England
Date of birth: October 1984
Address: 10-11, Charterhouse Square, London, EC1M 6EE, England

NICHOLAS, John Edward RESIGNED
Role: Director
Appointed on: 28 Aug 2018
Resigned on: 16 May 2019
Country of Residence: Portugal
Date of birth: August 1956
Address: 12 Charterhouse Square, London, EC1M 6AX

PARKINSON, Andrew Michael Reay RESIGNED
Role: Director
Appointed on:
Resigned on: 03 Jul 2001
Date of birth: December 1942
Address: Tadlow House, Tadlow, Royston, Hertfordshire, SG8 0EL

REID, William RESIGNED
Role: Director
Appointed on: 01 Aug 1994
Resigned on: 21 Sep 2001
Date of birth: November 1937
Address: Baykers Lamb Lane, Sible Hedingham, Halstead, Essex, CO9 3RS

THOMAS, Aubrey John Christopher RESIGNED
Role: Director
Appointed on:
Resigned on: 10 Jan 2002
Date of birth: December 1930
Address: Stirtloe House Stirtloe, Huntingdon, Cambridgeshire, PE18 9XW

THOMPSON, Bruce Mckenzie RESIGNED
Role: Director
Appointed on: 03 Oct 1994
Resigned on: 08 May 2018
Country of Residence: England
Date of birth: April 1955
Address: 12 Charterhouse Square, London, EC1M 6AX

WALKER, Barry Matthew RESIGNED
Role: Director
Appointed on: 08 Jan 1993
Resigned on: 28 Oct 1993
Date of birth: August 1939
Address: 41 Ripplevale Grove, Islington, London, N1 1HS

Filing history

Timeline

People with significant control

Charges

Created	Status	Filings
30 Sep 2010	Satisfied	Registration of a charge (MG01) (opens in a new tab)Statement that part or the whole of the property charged has been released (MG04) (opens in a new tab)
14 Dec 1966	Satisfied	Statement of satisfaction of a charge in full or part (403a) (opens in a new tab)

Registers

Exemptions

No PSC exemptions are recorded for this company.

Legal Entity Identifier

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