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The above diagram shows the color scheme of the layout in the main result page. The parent entities and officers who have significant controls over the individuals in focus are always inapplicable. The offspring entities and appointments are those entities that the individuals 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
Inapplicable
parent relation
Individuals in focus

Ms Fiona Louise Howarth

    Related profiles found in government register
  • Ms Fiona Louise Howarth
    British born in March 1982

    Resident in United Kingdom

    Registered addresses and corresponding companies
    • 16, Mendez Way, London, SW15 5GA, England

      IIF 1
    • 71-75, Shelton Street, Covent Garden, London, WC2H 9JQ, United Kingdom

      IIF 2 IIF 3
  • Howarth, Fiona Louise
    British born in March 1982

    Resident in United Kingdom

    Registered addresses and corresponding companies
    • 7, Bell Yard, London, WC2A 2JR, United Kingdom

      IIF 4
    • 71-75, Shelton Street, Covent Garden, London, WC2H 9JQ, United Kingdom

      IIF 5 IIF 6
    • Sustainable Ventures, County Hall, Belvedere Road, London, SE1 7PB, England

      IIF 7
    • Uk House, 5th Floor, 164-182 Oxford Street, London, W1D 1NN, United Kingdom

      IIF 8
  • Mrs Fiona Louise Saunders
    British born in March 1982

    Resident in England

    Registered addresses and corresponding companies
    • 16, Mendez Way, London, SW15 5GA, England

      IIF 9
  • Howarth, Fiona Louise
    British director born in March 1982

    Resident in England

    Registered addresses and corresponding companies
    • 16, Mendez Way, London, SW15 5GA, England

      IIF 10
  • Saunders, Fiona Louise
    British co-founder born in March 1982

    Resident in England

    Registered addresses and corresponding companies
    • 16, Mendez Way, London, SW15 5GA, England

      IIF 11
child relation
Offspring entities and appointments
Active 7
  • 1
    16 Mendez Way, London, England
    Dissolved Corporate (1 parent)
    Equity (Company account)
    -2,184 GBP2021-03-30
    Officer
    2010-04-09 ~ dissolved
    IIF 10 - Director → ME
    Person with significant control
    2016-04-06 ~ dissolved
    IIF 1 - Ownership of shares – 75% or moreOE
    IIF 1 - Ownership of voting rights - 75% or moreOE
  • 2
    71-75 Shelton Street, Covent Garden, London, United Kingdom
    Active Corporate (3 parents)
    Officer
    2025-09-04 ~ now
    IIF 6 - Director → ME
    Person with significant control
    2025-09-04 ~ now
    IIF 3 - Ownership of voting rights - More than 25% but not more than 50%OE
    IIF 3 - Ownership of shares – More than 25% but not more than 50%OE
  • 3
    71-75 Shelton Street, Covent Garden, London, United Kingdom
    Active Corporate (2 parents)
    Officer
    2025-09-01 ~ now
    IIF 5 - Director → ME
    Person with significant control
    2025-09-01 ~ now
    IIF 2 - Ownership of voting rights - More than 25% but not more than 50%OE
    IIF 2 - Ownership of shares – More than 25% but not more than 50%OE
  • 4
    Uk House, 5th Floor, 164-182 Oxford Street, London, United Kingdom
    Active Corporate (6 parents)
    Officer
    2024-09-12 ~ now
    IIF 8 - Director → ME
  • 5
    Sustainable Ventures, County Hall, Belvedere Road, London, England
    Active Corporate (5 parents)
    Equity (Company account)
    52,931 GBP2025-02-28
    Officer
    2025-11-10 ~ now
    IIF 7 - Director → ME
  • 6
    Other registered number: 16253128
    TRANSITIONZERO LTD - 2021-06-08
    Related registration: 16253128
    ENERGY AND CLEAN AIR ANALYTICS - 2021-05-14
    ENERGY AND CLEAN AIR ANALYTICS LTD - 2020-12-30
    7 Bell Yard, London, United Kingdom
    Active Corporate (4 parents, 1 offspring)
    Officer
    2025-11-25 ~ now
    IIF 4 - Director → ME
  • 7
    16 Mendez Way, London, England
    Dissolved Corporate (2 parents)
    Equity (Company account)
    -8,825 GBP2018-01-31
    Officer
    2016-01-26 ~ dissolved
    IIF 11 - Director → ME
    Person with significant control
    2016-04-06 ~ dissolved
    IIF 9 - Ownership of shares – More than 25% but not more than 50%OE

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Contains public sector information retrieved at 9 February 2026 and licensed under the Open Government Licence v3.0.