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The above diagram shows the color scheme of the layout in the main result page. The parent entities and officers are those entities, including individual and legal persons, have significant controls over the company in focus. The offspring entities and appointments are those entities that the company in focus can influence on.

Clicking the links on parent entities or officers, and offspring entities or managed companies will put them in focus and show upstream or downstream connections. In general, ascendant entities can be found by moving toward upstream, and descendant entities are by toward downstream. In this way, progenitor entities such as grandparent companies (parents of parent), sibling companies (children of parent), partner companies (parents of child), and progeny entities such as grandchild companies (children of child) can be found easily.

Parent entities and officers
Active 10
  • 1
    Thomson, Jonathan David
    Born in August 1972
    Individual (3 offsprings)
    Officer
    icon of calendar 2019-02-25 ~ now
    OF - Director → CIF 0
  • 2
    Ward, Jennifer Suzanne
    Born in September 1973
    Individual (2 offsprings)
    Officer
    icon of calendar 2023-06-01 ~ now
    OF - Director → CIF 0
  • 3
    Stipp, Janice
    Born in September 1959
    Individual (1 offspring)
    Officer
    icon of calendar 2024-01-17 ~ now
    OF - Director → CIF 0
  • 4
    Huse, Geraldine Claire
    Born in September 1963
    Individual (1 offspring)
    Officer
    icon of calendar 2020-01-20 ~ now
    OF - Director → CIF 0
  • 5
    El-mokadem, Ian Ramsey Safwat
    Born in February 1968
    Individual (8 offsprings)
    Officer
    icon of calendar 2025-01-15 ~ now
    OF - Director → CIF 0
  • 6
    Finch, Dean Kendal
    Born in July 1966
    Individual (8 offsprings)
    Officer
    icon of calendar 2021-05-21 ~ now
    OF - Director → CIF 0
  • 7
    Bickerstaffe, Katie
    Born in April 1967
    Individual (6 offsprings)
    Officer
    icon of calendar 2024-10-01 ~ now
    OF - Director → CIF 0
  • 8
    Lowden, David Soutar
    Born in August 1957
    Individual (4 offsprings)
    Officer
    icon of calendar 2021-10-19 ~ now
    OF - Director → CIF 0
  • 9
    Lawrence, Anna
    Individual (21 offsprings)
    Officer
    icon of calendar 2025-05-30 ~ now
    OF - Secretary → CIF 0
  • 10
    Ng, Wilson
    Born in September 1981
    Individual (16 offsprings)
    Officer
    icon of calendar 2025-08-14 ~ now
    OF - Director → CIF 0
Ceased 22
  • 1
    Thorburn, Anne
    Director born in July 1960
    Individual (3 offsprings)
    Officer
    icon of calendar 2015-09-07 ~ 2024-09-30
    OF - Director → CIF 0
  • 2
    Lingwood, Nigel Peter
    Chartered Accountant born in March 1959
    Individual (8 offsprings)
    Officer
    icon of calendar 2001-07-03 ~ 2020-06-22
    OF - Director → CIF 0
    Lingwood, Nigel Peter
    Individual (8 offsprings)
    Officer
    icon of calendar 2001-07-03 ~ 2012-09-21
    OF - Secretary → CIF 0
  • 3
    Gibbes, Barbara
    Chief Financial Officer born in July 1975
    Individual
    Officer
    icon of calendar 2020-06-22 ~ 2022-09-30
    OF - Director → CIF 0
  • 4
    Nicholas, John Edward
    Director born in August 1956
    Individual (2 offsprings)
    Officer
    icon of calendar 2013-06-01 ~ 2022-01-19
    OF - Director → CIF 0
  • 5
    Morrison, John
    Individual (29 offsprings)
    Officer
    icon of calendar 2020-05-05 ~ 2025-05-30
    OF - Secretary → CIF 0
  • 6
    Ingram, Richard John
    Director born in April 1963
    Individual (2 offsprings)
    Officer
    icon of calendar 2018-04-23 ~ 2018-08-28
    OF - Director → CIF 0
  • 7
    Rennocks, John Leonard
    Chartered Accountant born in June 1945
    Individual
    Officer
    icon of calendar 2002-07-02 ~ 2015-01-21
    OF - Director → CIF 0
  • 8
    Clayton, Marie-louise Louise
    Director born in August 1960
    Individual (5 offsprings)
    Officer
    icon of calendar 2012-11-13 ~ 2015-11-16
    OF - Director → CIF 0
  • 9
    Henderson, John Iain
    Accountant born in January 1956
    Individual (6 offsprings)
    Officer
    icon of calendar 2000-02-21 ~ 2016-01-20
    OF - Director → CIF 0
  • 10
    Reid, William
    Company Director born in November 1938
    Individual
    Officer
    icon of calendar 2000-02-21 ~ 2003-04-01
    OF - Director → CIF 0
  • 11
    Parkinson, Andrew Michael Reay
    Chartered Accountant born in December 1942
    Individual
    Officer
    icon of calendar 2000-01-24 ~ 2001-07-03
    OF - Director → CIF 0
    Parkinson, Andrew Michael Reay
    Individual
    Officer
    icon of calendar 2000-01-24 ~ 2001-07-03
    OF - Secretary → CIF 0
  • 12
    Gallagher, Anthony James
    Individual
    Officer
    icon of calendar 2012-09-21 ~ 2020-05-05
    OF - Secretary → CIF 0
  • 13
    Grice, Ian Michael
    Director born in May 1953
    Individual (3 offsprings)
    Officer
    icon of calendar 2007-01-24 ~ 2013-09-30
    OF - Director → CIF 0
  • 14
    Matthews, John Waylett
    Chartered Accountant born in September 1944
    Individual (3 offsprings)
    Officer
    icon of calendar 2003-07-24 ~ 2013-09-30
    OF - Director → CIF 0
  • 15
    Smith, Andrew Patrick
    Company Director born in September 1960
    Individual (2 offsprings)
    Officer
    icon of calendar 2015-02-10 ~ 2024-07-16
    OF - Director → CIF 0
  • 16
    Thompson, Bruce Mckenzie
    Company Director born in April 1955
    Individual (5 offsprings)
    Officer
    icon of calendar 2000-01-24 ~ 2018-05-08
    OF - Director → CIF 0
  • 17
    Thomas, Aubrey John Christopher
    Director born in December 1930
    Individual
    Officer
    icon of calendar 2000-02-21 ~ 2004-01-07
    OF - Director → CIF 0
  • 18
    Davies, Christopher Mark
    Chief Financial Officer born in March 1970
    Individual (3 offsprings)
    Officer
    icon of calendar 2022-11-01 ~ 2025-08-13
    OF - Director → CIF 0
  • 19
    Packshaw, Charles Max
    Director born in January 1952
    Individual (2 offsprings)
    Officer
    icon of calendar 2013-06-01 ~ 2021-01-20
    OF - Director → CIF 0
  • 20
    Stewartby, Bernard Harold Ian Halley, Lord
    Banker born in August 1935
    Individual
    Officer
    icon of calendar 2000-02-21 ~ 2007-01-10
    OF - Director → CIF 0
  • 21
    icon of address26, Church Street, London
    Dissolved Corporate (4 parents, 9 offsprings)
    Equity (Company account)
    2 GBP2022-12-31
    Officer
    1999-12-24 ~ 2000-01-24
    PE - Nominee Director → CIF 0
    1999-12-24 ~ 2000-01-24
    PE - Nominee Secretary → CIF 0
  • 22
    icon of address1, Mitchell Lane, Bristol, Avon
    Dissolved Corporate (4 parents, 14 offsprings)
    Equity (Company account)
    100 GBP2022-12-31
    Officer
    1999-12-24 ~ 2000-01-24
    PE - Nominee Director → CIF 0
parent relation
Company in focus

DIPLOMA PLC

Previous names
MERGESECTOR PUBLIC LIMITED COMPANY - 2000-02-22
NEW DIPLOMA PLC - 2000-04-17
Standard Industrial Classification
70100 - Activities Of Head Offices

Related profiles found in government register
  • DIPLOMA PLC
    Info
    MERGESECTOR PUBLIC LIMITED COMPANY - 2000-02-22
    NEW DIPLOMA PLC - 2000-02-22
    Registered number 03899848
    icon of address10-11 Charterhouse Square, London EC1M 6EE
    PUBLIC LIMITED COMPANY incorporated on 1999-12-24 (26 years). The company status is Active.
    The last date of confirmation statement was made at 2024-12-22
    CIF 0
  • DIPLOMA PLC
    S
    Registered number 3899848
    icon of address12, Charterhouse Square, London, England, EC1M 6AX
    Public Company Limited By Shares in England & Wales, England
    CIF 1
    Public Limited Company in England & Wales, England
    CIF 2
child relation
Offspring entities and appointments
Active 2
  • 1
    DIPLOMA P.L.C. - 2000-04-17
    DIPLOMA INVESTMENTS LIMITED - 1978-12-31
    icon of address10-11 Charterhouse Square, London, England
    Active Corporate (4 parents, 16 offsprings)
    Person with significant control
    icon of calendar 2016-04-06 ~ now
    CIF 1 - Ownership of voting rights - 75% or moreOE
    CIF 1 - Right to appoint or remove directorsOE
    CIF 1 - Ownership of shares – 75% or moreOE
  • 2
    icon of address10-11 Charterhouse Square, London, England
    Active Corporate (4 parents)
    Person with significant control
    icon of calendar 2016-04-06 ~ now
    CIF 2 - Right to appoint or remove directorsOE
    CIF 2 - Has significant influence or controlOE
    CIF 2 - Ownership of shares – 75% or moreOE
    CIF 2 - Ownership of voting rights - 75% or moreOE

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Contains public sector information retrieved at 12 November 2025 and licensed under the Open Government Licence v3.0.