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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 4
  • 1
    Mordaunt, Helen Marie
    Born in January 1974
    Individual (3 offsprings)
    Officer
    icon of calendar 2021-11-24 ~ now
    OF - Director → CIF 0
    Mrs Helen Marie Mordaunt
    Born in January 1974
    Individual (3 offsprings)
    Person with significant control
    icon of calendar 2023-01-31 ~ now
    PE - Has significant influence or controlCIF 0
  • 2
    Mordaunt, Alastair Nigel Charles
    Born in January 1974
    Individual (3 offsprings)
    Officer
    icon of calendar 2025-11-04 ~ now
    OF - Director → CIF 0
  • 3
    Cosgrove, Dominick
    Born in September 1944
    Individual (1 offspring)
    Officer
    icon of calendar ~ now
    OF - Director → CIF 0
  • 4
    Mackinnon, Joan Ailsa
    Born in September 1936
    Individual (2 offsprings)
    Officer
    icon of calendar ~ now
    OF - Director → CIF 0
Ceased 3
  • 1
    Mordaunt, Helen Marie
    Manager
    Individual (3 offsprings)
    Officer
    icon of calendar 2004-12-07 ~ 2021-11-24
    OF - Secretary → CIF 0
  • 2
    Mackinnon, Joan Ailsa
    Individual (2 offsprings)
    Officer
    icon of calendar ~ 2005-01-01
    OF - Secretary → CIF 0
    Ms Joan Ailsa Mackinnon
    Born in September 1936
    Individual (2 offsprings)
    Person with significant control
    icon of calendar 2021-08-29 ~ 2023-01-31
    PE - Has significant influence or controlCIF 0
  • 3
    Mackinnon, David Michael
    Doctor born in July 1931
    Individual
    Officer
    icon of calendar ~ 2021-08-29
    OF - Director → CIF 0
    Mr David Michael Mackinnon
    Born in July 1931
    Individual
    Person with significant control
    icon of calendar 2016-07-15 ~ 2021-08-29
    PE - Ownership of shares – More than 25% but not more than 50%CIF 0
parent relation
Company in focus

DMM HOLDINGS LIMITED

Previous names
69 HARLEY STREET LTD. - 2005-03-14
HOUSE AND FLAT INVESTMENT TRUST LIMITED - 2003-06-06
Standard Industrial Classification
68209 - Other Letting And Operating Of Own Or Leased Real Estate
Brief company account
Fixed Assets
1,200,000 GBP2024-03-29
1,200,000 GBP2023-03-29
Current Assets
78,125 GBP2024-03-29
78,125 GBP2023-03-29
Creditors
Current, Amounts falling due within one year
-15,216 GBP2024-03-29
Equity
1,262,909 GBP2024-03-29
1,262,909 GBP2023-03-29
Average Number of Employees
32023-03-30 ~ 2024-03-29
32022-03-30 ~ 2023-03-29

  • DMM HOLDINGS LIMITED
    Info
    69 HARLEY STREET LTD. - 2005-03-14
    HOUSE AND FLAT INVESTMENT TRUST LIMITED - 2005-03-14
    Registered number 00343835
    icon of address4th Floor Fitzrovia House, 153-157 Cleveland Street, London W1T 6QW
    PRIVATE LIMITED COMPANY incorporated on 1938-08-29 (87 years 4 months). The company status is Active.
    The last date of confirmation statement was made at 2025-06-07
    CIF 0
child relation
Offspring entities and appointments
Active 0
  • Not found in our database.

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