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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

Birrell, Mark Victor

    Related profiles found in government register
  • Birrell, Mark Victor
    British born in June 1959

    Resident in England

    Registered addresses and corresponding companies
  • Birrell, Mark Victor
    British chairman born in June 1959

    Resident in England

    Registered addresses and corresponding companies

    • Tower, Point 44, 4th Floor, Suite 415 North Road, Brighton, BN1 1YR, England

      IIF 12
  • Birrell, Mark Victor
    British company director born in June 1959

    Resident in England

    Registered addresses and corresponding companies

    • Tower, Point 44, 4th Floor, Suite 415 North Road, Brighton, BN1 1YR, England

      IIF 13
  • Birrell, Mark Victor
    British director born in June 1959

    Resident in England

    Registered addresses and corresponding companies

    • Tower, Point 44, 4th Floor, Suite 415 North Road, Brighton, East Sussex, BN1 1YR, England

      IIF 14
  • Birrell, Mark Victor
    British insurance executive born in June 1959

    Resident in England

    Registered addresses and corresponding companies

    • 33 Gracechurch Street, London, EC3V 0BT, United Kingdom

      IIF 15
  • Birrell, Mark
    British director born in June 1959

    Resident in England

    Registered addresses and corresponding companies

    • Holton House, Spring Lane, Burwash, Etchingham, East Sussex, TN19 7HX, England

      IIF 16
  • Birrell, Mark Victor
    born in June 1959

    Resident in England

    Registered addresses and corresponding companies

    • Chapel Cottage, Totford, Alresford, SO24 9TJ, United Kingdom

      IIF 17

    • 33, Gracechurch Street, London, EC3V 0BT

      IIF 18
  • Birrell, Mark Victor
    British born in June 1959

    Resident in United Kingdom

    Registered addresses and corresponding companies

    • 5th Floor, 70 Gracechurch Street, London, EC3V 0XL, United Kingdom

      IIF 19
  • Birell, Mark Victor
    British insurance executive born in June 1959

    Resident in United Kingdom

    Registered addresses and corresponding companies

    • 6th Floor, 25 Fenchurch Avenue, London, EC3M 5AD, United Kingdom

      IIF 20
  • Birrell, Mark
    born in June 1959

    Resident in England

    Registered addresses and corresponding companies

    • 33, Gracechurch Street, London, EC3V 0BT

      IIF 21
  • Mark Birrell
    British born in June 1959

    Resident in England

    Registered addresses and corresponding companies

    • 33, Gracechurch Street, London, EC3V 0BT, England

      IIF 22
  • Mr Mark Victor Birrell
    British born in June 1959

    Resident in England

    Registered addresses and corresponding companies

    • 33, Gracechurch Street, London, EC3V 0BT, England

      IIF 23
  • Birrell, Mark
    British managing director born in June 1959

    Resident in United Kingdom

    Registered addresses and corresponding companies

    • 60, Great Tower Street, London, EC3R 5AZ, United Kingdom

      IIF 24
  • Mr Mark Victor Birrell
    British born in June 1959

    Resident in United Kingdom

    Registered addresses and corresponding companies

    • 5th Floor, 70 Gracechurch Street, London, EC3V 0XL, United Kingdom

      IIF 25
  • Mark Victor Birrell
    British born in June 1959

    Resident in United Kingdom

    Registered addresses and corresponding companies

    • 5th Floor, 70, Gracechurch Street, London, EC3V 0LX, United Kingdom

      IIF 26
child relation
Offspring entities and appointments
Active 16
  • 1
    Ground Floor, 60 Great Tower Street, London, United Kingdom
    Active Corporate (3 parents)
    Officer
    2022-04-12 ~ now
    IIF 8 - Director → ME
  • 2
    Dentons Uk And Middle East Llp, First Floor 9 Haymarket Square, Edinburgh
    Active Corporate (2 parents)
    Person with significant control
    2025-02-12 ~ now
    IIF 26 - Right to surplus assets - 75% or more → OE
    IIF 26 - Ownership of voting rights - 75% or more → OE
    IIF 26 - Right to appoint or remove persons → OE
  • 3
    5th Floor 70 Gracechurch Street, London, United Kingdom
    Active Corporate (2 parents)
    Officer
    2025-08-13 ~ now
    IIF 19 - Director → ME
    Person with significant control
    2025-08-13 ~ now
    IIF 25 - Ownership of shares – 75% or more → OE
    IIF 25 - Right to appoint or remove directors → OE
    IIF 25 - Ownership of voting rights - 75% or more → OE
  • 4
    CASTEL LTDCO 2 LIMITED - 2021-11-11
    60 Great Tower Street, London, England
    Active Corporate (3 parents)
    Officer
    2021-04-12 ~ now
    IIF 10 - Director → ME
  • 5
    Ground Floor, 60 Great Tower Street, London, England
    Active Corporate (3 parents)
    Officer
    2022-09-01 ~ now
    IIF 6 - Director → ME
  • 6
    Parcels Building, 14 Bird Street, London, United Kingdom
    Active Corporate (13 parents)
    Profit/Loss (Company account)
    0 GBP2023-04-06 ~ 2024-04-05
    Officer
    2006-03-06 ~ now
    IIF 17 - LLP Member → ME
  • 7
    Holton House Spring Lane, Burwash, Etchingham, East Sussex, England
    Dissolved Corporate (1 parent)
    Officer
    2013-06-04 ~ dissolved
    IIF 16 - Director → ME
  • 8
    Ground Floor, 60 Great Tower Street, London, United Kingdom
    Active Corporate (3 parents)
    Officer
    2022-09-09 ~ now
    IIF 9 - Director → ME
  • 9
    INNOVISK EUROPE GMBH - UK BRANCH - 2025-07-03
    8 Hohe Bleichen, Hamburg, 20354, Germany
    Active Corporate (6 parents, 1 offspring)
    Officer
    2025-03-25 ~ now
    IIF 20 - Director → ME
  • 10
    RYAN SPECIALTY GROUP EUROPE LIMITED - 2022-05-03
    RYAN (JGHL) BID CO LIMITED - 2014-11-26
    30 St. Mary Axe, 13th Floor, Directors, London, United Kingdom
    Active Corporate (3 parents, 7 offsprings)
    Officer
    2024-08-21 ~ now
    IIF 4 - Director → ME
  • 11
    RSG UNDERWRITING MANAGERS EUROPE LIMITED - 2022-04-27
    RSG EUROPE SPECIALTY LINES LIMITED - 2016-05-28
    RSG (1) LIMITED - 2015-01-14
    START POINT EXECUTIVE RISKS LIMITED - 2015-01-14
    RYAN SPECIALTY (EUROPE) LIMITED - 2014-12-03
    30 St. Mary Axe, 13th Floor, Directors, London, United Kingdom
    Active Corporate (4 parents, 1 offspring)
    Officer
    2025-02-23 ~ now
    IIF 5 - Director → ME
  • 12
    CASTEL UNDERWRITING EUROPE B.V. - 2024-09-18
    33 Gracechurch Street, London
    Active Corporate (2 parents, 2 offsprings)
    Officer
    2020-12-04 ~ now
    IIF 24 - Director → ME
  • 13
    30 St. Mary Axe, 13th Floor, London, United Kingdom
    Active Corporate (3 parents, 2 offsprings)
    Officer
    2024-08-21 ~ now
    IIF 3 - Director → ME
  • 14
    CASTEL UNDERWRITING AGENCIES LIMITED - 2024-07-24
    CASTEL MANAGEMENT LIMITED - 2013-02-11
    60 Great Tower Street, London, England
    Active Corporate (3 parents, 12 offsprings)
    Officer
    2013-11-01 ~ now
    IIF 2 - Director → ME
  • 15
    CASTEL LTDCO 1 LIMITED - 2022-04-28
    Ground Floor, 60 Great Tower Street, London, England
    Active Corporate (3 parents)
    Officer
    2021-04-03 ~ now
    IIF 7 - Director → ME
  • 16
    SEACURUS LIMITED - 2022-08-16
    Ground Floor, 60 Great Tower Street, London, England
    Active Corporate (3 parents, 1 offspring)
    Officer
    2022-06-10 ~ now
    IIF 1 - Director → ME
Ceased 7
  • 1
    MANAGING GENERAL AGENTS' ASSOCIATION LIMITED - 2011-08-31
    One, Minster Court, London, England
    Active Corporate (11 parents)
    Equity (Company account)
    524,475 GBP2024-08-31
    Officer
    2016-02-24 ~ 2020-01-08
    IIF 11 - Director → ME
  • 2
    CASTEL RISK (NO.1) LIMITED - 2015-02-10
    1st Floor 145 Leadenhall Street, London, England
    Active Corporate (5 parents)
    Officer
    2015-01-06 ~ 2020-09-17
    IIF 15 - Director → ME
  • 3
    CASTEL RISK PARTNERS (NO.1) LLP - 2017-04-08
    51 Eastcheap 51 Eastcheap, London, England
    Active Corporate (2 parents)
    Officer
    2017-01-04 ~ 2017-03-22
    IIF 21 - LLP Designated Member → ME
    Person with significant control
    2017-01-04 ~ 2017-03-22
    IIF 23 - Ownership of voting rights - More than 25% but not more than 50% → OE
    IIF 23 - Right to surplus assets - More than 25% but not more than 50% → OE
  • 4
    WILDNET NEW MEDIA GROUP LIMITED - 2002-07-05
    BENFIELD GREIG INTERACTIVE LIMITED - 2000-05-15
    INTERACTIVE PROGRAM MANAGERS LIMITED - 1998-07-30
    JETCHOICE LIMITED - 1997-11-24
    44-46 Whitemaund, Old Steine, Brighton, East Sussex, England
    Dissolved Corporate (2 parents)
    Officer
    1998-08-01 ~ 2014-03-31
    IIF 13 - Director → ME
  • 5
    BDBCO NO.630 LIMITED - 2004-04-21
    Tower Point, 44 4th Floor, Suite 417, North Road, Brighton, East Sussex
    Dissolved Corporate (2 parents)
    Officer
    2004-02-23 ~ 2013-12-11
    IIF 14 - Director → ME
  • 6
    NEW WILDTEAM LIMITED - 2009-10-21
    Whitemaund, 44-46 Old Steine, Brighton, East Sussex, England
    Dissolved Corporate (1 parent)
    Officer
    2009-09-29 ~ 2014-03-31
    IIF 12 - Director → ME
  • 7
    CASTEL RISK PARTNERS (NO.2) LLP - 2017-04-08
    60 Great Tower Street, London, England
    Active Corporate (3 parents)
    Officer
    2017-03-07 ~ 2017-03-22
    IIF 18 - LLP Designated Member → ME
    Person with significant control
    2017-03-07 ~ 2017-03-22
    IIF 22 - Ownership of voting rights - More than 25% but not more than 50% → OE
    IIF 22 - Right to surplus assets - More than 25% but not more than 50% → OE

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