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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

Crossan, Robert John

child relation
Offspring entities and appointments
Active 18
  • 1
    C/o Sdr Group Sussex Innovation Centre, Science Park Square, Falmer, Brighton, England
    Active Corporate (4 parents)
    Equity (Company account)
    318,698 GBP2022-03-31
    Officer
    2021-10-01 ~ now
    IIF 7 - Director → ME
  • 2
    C/o Sdr Group Sussex Innovation Centre, Science Park Square, Falmer, Brighton, England
    Active Corporate (4 parents)
    Equity (Company account)
    606,727 GBP2022-03-31
    Officer
    2021-10-01 ~ now
    IIF 6 - Director → ME
  • 3
    12 Hatherley Road Hatherley Road, Sidcup, England
    Active Corporate (4 parents)
    Equity (Company account)
    1,192,905 GBP2024-08-31
    Officer
    2025-12-18 ~ now
    IIF 15 - Director → ME
  • 4
    RAPID 8689 LIMITED - 1989-09-25
    C/o Healthcare Management Solutions Limited Drakes Court, 302 Alcester Road, Wythall, Birmingham, England
    Active Corporate (4 parents)
    Equity (Company account)
    1,597,521 GBP2024-12-31
    Officer
    2025-09-23 ~ now
    IIF 14 - Director → ME
  • 5
    C/o Sdr Group Sussex Innovation Centre, Science Park Square, Falmer, Brighton, England
    Active Corporate (4 parents)
    Equity (Company account)
    19,498 GBP2024-03-31
    Officer
    2021-10-01 ~ now
    IIF 17 - Director → ME
  • 6
    SDR NEWCO LIMITED - 2021-11-25
    C/o Sdr Group Sussex Innovation Centre, Science Park Square, Falmer, Brighton, England
    Active Corporate (4 parents)
    Equity (Company account)
    80,094 GBP2024-03-31
    Officer
    2021-10-01 ~ now
    IIF 9 - Director → ME
  • 7
    C/o Sdr Group Sussex Innovation Centre, Science Park Square, Falmer, Brighton, England
    Active Corporate (4 parents)
    Net Assets/Liabilities (Company account)
    1 GBP2024-03-31
    Officer
    2023-05-23 ~ now
    IIF 18 - Director → ME
  • 8
    C/o Sdr Group Sussex Innovation Centre, Science Park Square, Falmer, Brighton, England
    Active Corporate (4 parents)
    Net Assets/Liabilities (Company account)
    1 GBP2024-03-31
    Officer
    2023-05-23 ~ now
    IIF 16 - Director → ME
  • 9
    C/o Sdr Group Sussex Innovation Centre, Science Park Square, Falmer, Brighton, England
    Active Corporate (4 parents)
    Net Assets/Liabilities (Company account)
    1 GBP2024-03-31
    Officer
    2023-05-24 ~ now
    IIF 1 - Director → ME
  • 10
    C/o Sdr Group Sussex Innovation Centre, Science Park Square, Falmer, Brighton, England
    Active Corporate (4 parents, 3 offsprings)
    Equity (Company account)
    -490,115 GBP2022-03-31
    Officer
    2021-10-01 ~ now
    IIF 10 - Director → ME
  • 11
    C/o Sdr Group Sussex Innovation Centre, Science Park Square, Falmer, Brighton, England
    Active Corporate (4 parents)
    Equity (Company account)
    1 GBP2022-03-31
    Officer
    2021-10-01 ~ now
    IIF 13 - Director → ME
  • 12
    C/o Sdr Group Sussex Innovation Centre, Science Park Square, Falmer, Brighton, England
    Active Corporate (4 parents)
    Net Assets/Liabilities (Company account)
    1 GBP2023-03-31
    Officer
    2022-10-20 ~ now
    IIF 2 - Director → ME
  • 13
    SDR PROPCO LIMITED - 2020-07-21
    C/o Sdr Group Sussex Innovation Centre, Science Park Square, Falmer, Brighton, England
    Active Corporate (4 parents)
    Equity (Company account)
    130,609 GBP2024-03-31
    Officer
    2021-10-01 ~ now
    IIF 4 - Director → ME
  • 14
    C/o Sdr Group Sussex Innovation Centre, Science Park Square, Falmer, Brighton, England
    Active Corporate (4 parents)
    Officer
    2022-04-04 ~ now
    IIF 3 - Director → ME
  • 15
    C/o Sdr Group Sussex Innovation Centre, Science Park Square, Falmer, Brighton, England
    Active Corporate (4 parents, 4 offsprings)
    Equity (Company account)
    1 GBP2022-03-31
    Officer
    2021-11-12 ~ now
    IIF 12 - Director → ME
  • 16
    Sdr Group Sussex Innovation Centre, Science Park Square, Falmer, Brighton, England
    Active Corporate (4 parents, 11 offsprings)
    Equity (Company account)
    -297 GBP2022-03-31
    Officer
    2021-10-01 ~ now
    IIF 11 - Director → ME
  • 17
    C/o Sdr Group Sussex Innovation Centre, Science Park Square, Falmer, Brighton, England
    Active Corporate (4 parents)
    Equity (Company account)
    5,978,883 GBP2022-03-31
    Officer
    2021-10-01 ~ now
    IIF 8 - Director → ME
  • 18
    C/o Sdr Group Sussex Innovation Centre Science Park Square, Falmer, Brighton, England
    Active Corporate (5 parents)
    Equity (Company account)
    4,647,686 GBP2024-03-31
    Officer
    2024-07-01 ~ now
    IIF 5 - Director → ME

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