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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

Hammer, Jan

    Related profiles found in government register
  • Hammer, Jan
    British director born in September 1976

    Resident in United Kingdom

    Registered addresses and corresponding companies

    • icon of address Index Ventures, 3 Burlington Gardens, London, W1S 3EP, United Kingdom

      IIF 1
  • Hammer, Jan
    Czech inv manager born in September 1976

    Resident in United Kingdom

    Registered addresses and corresponding companies

    • icon of address 36 St George's Drive, London, SW1V 4BN

      IIF 2
  • Hammer, Jan
    British director born in September 1976

    Resident in England

    Registered addresses and corresponding companies

    • icon of address C/o S&w Partners Llp, Onslow House, Onslow Street, Guildford, GU1 4TL, United Kingdom

      IIF 3

    • icon of address 201, Bishopsgate, London, EC2M 3AB, England

      IIF 4
  • Hammer, Jan
    British investor born in September 1976

    Resident in England

    Registered addresses and corresponding companies

    • icon of address 3b Burlington Gardens, Burlington Gardens, London, W1S 3EP, England

      IIF 5
  • Hammer, Jan
    British none born in September 1976

    Resident in England

    Registered addresses and corresponding companies

    • icon of address Suite A, 6 Honduras Street, London, EC1Y 0TH, United Kingdom

      IIF 6
  • Hammer, Jan
    British venture capital advisor born in September 1976

    Resident in England

    Registered addresses and corresponding companies

    • icon of address 3, Burlington Gardens, London, W1S 3EP, England

      IIF 7
  • Hammer, Jan
    born in September 1976

    Resident in England

    Registered addresses and corresponding companies

    • icon of address 5 To 8, Lower John Street, London, W1F 9DY, England

      IIF 8
  • Mr Jan Hammer
    British born in September 1976

    Resident in England

    Registered addresses and corresponding companies

    • icon of address C/o S&w Partners Llp, Onslow House, Onslow Street, Guildford, GU1 4TL, United Kingdom

      IIF 9
child relation
Offspring entities and appointments
Active 5
  • 1
    HELLO CASH LTD - 2023-02-17
    icon of address 201 Bishopsgate, London, England
    Active Corporate (5 parents)
    Equity (Company account)
    11,507,187 GBP2023-12-31
    Officer
    icon of calendar 2023-07-28 ~ now
    IIF 4 - Director → ME
  • 2
    icon of address Suite A, 6 Honduras Street, London, United Kingdom
    Active Corporate (8 parents)
    Equity (Company account)
    -5,125,427 GBP2024-12-31
    Officer
    icon of calendar 2014-06-23 ~ now
    IIF 6 - Director → ME
  • 3
    INDEX VENTURE MANAGEMENT SERVICES LLP - 2009-06-29
    INDEX VENTURE MANAGEMENT LLP - 2014-11-28
    icon of address 5 To 8 Lower John Street, London, England
    Active Corporate (6 parents, 1 offspring)
    Officer
    icon of calendar 2011-12-01 ~ now
    IIF 8 - LLP Designated Member → ME
  • 4
    icon of address 86-90 Paul Street, London, United Kingdom
    Active Corporate (6 parents)
    Equity (Company account)
    18,511,919 GBP2019-03-31
    Officer
    icon of calendar 2018-12-27 ~ now
    IIF 7 - Director → ME
  • 5
    icon of address C/o S&w Partners Llp Onslow House, Onslow Street, Guildford, United Kingdom
    Active Corporate (2 parents)
    Officer
    icon of calendar 2019-09-02 ~ now
    IIF 3 - Director → ME
    Person with significant control
    icon of calendar 2019-09-02 ~ now
    IIF 9 - Ownership of voting rights - More than 25% but not more than 50% → OE
    IIF 9 - Ownership of shares – 75% or more → OE
Ceased 3
  • 1
    THORNELL FLAT MANAGEMENT LIMITED - 2002-08-13
    icon of address Stonemead House, 95 London Road, Croydon, Surrey, United Kingdom
    Active Corporate (4 parents)
    Equity (Company account)
    9,986 GBP2024-06-30
    Officer
    icon of calendar 2005-08-30 ~ 2012-08-03
    IIF 2 - Director → ME
  • 2
    icon of address 15 Long Lane, London, England
    Active Corporate (5 parents)
    Profit/Loss (Company account)
    -20,378,071 GBP2024-01-01 ~ 2024-12-31
    Officer
    icon of calendar 2020-05-22 ~ 2021-10-04
    IIF 1 - Director → ME
  • 3
    icon of address 6a Nesbitts Alley, Barnet, England
    Liquidation Corporate (1 parent)
    Equity (Company account)
    6,155,289 GBP2024-04-30
    Officer
    icon of calendar 2020-12-09 ~ 2024-06-13
    IIF 5 - Director → ME

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Contains public sector information retrieved at 16 October 2025 and licensed under the Open Government Licence v3.0.