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

Roulston, John Francis, Professor

    Related profiles found in government register
  • Roulston, John Francis, Professor
    British chartered electrical engineer born in June 1948

    Resident in Scotland

    Registered addresses and corresponding companies
  • Roulston, John Francis, Professor
    British chief executive born in June 1948

    Resident in Scotland

    Registered addresses and corresponding companies
    • Dun Dornaigh, 35 Boswall Road, Edinburgh, Midlothian, EH5 3RP

      IIF 8
  • Roulston, John Francis, Professor
    British company director born in June 1948

    Resident in Scotland

    Registered addresses and corresponding companies
    • 1, Chlorine Gardens, Belfast, BT9 5DJ

      IIF 9
    • Dun Dornaigh, 35 Boswall Road, Edinburgh, Midlothian, EH5 3RP

      IIF 10
  • Roulston, John Francis, Professor
    British director born in June 1948

    Resident in Scotland

    Registered addresses and corresponding companies
    • Dun Dornaigh, 35 Boswall Road, Edinburgh, Midlothian, EH5 3RP

      IIF 11 IIF 12
  • Roulston, John Francis, Professor
    British technical director bae systems born in June 1948

    Resident in Scotland

    Registered addresses and corresponding companies
    • Dun Dornaigh, 35 Boswall Road, Edinburgh, Midlothian, EH5 3RP

      IIF 13
  • Professor John Francis Roulston
    British born in June 1948

    Resident in Scotland

    Registered addresses and corresponding companies
    • Dun Dornaigh, 35 Boswall Road, Edinburgh, EH5 3RP, Scotland

      IIF 14
  • Roulston, John Francis
    British director born in June 1948

    Registered addresses and corresponding companies
    • 16 Ascham Hall, Lady Park Avenue, Bingley, West Yorkshire, BD16 4UB

      IIF 15
  • Roulston, John Francis, Professor

    Registered addresses and corresponding companies
    • Dun Dornaigh, 35 Boswall Road, Edinburgh, Midlothian, EH5 3RP

      IIF 16
child relation
Offspring entities and appointments
Active 1
  • 1
    35 Boswall Road, Edinburgh
    Corporate (4 parents)
    Equity (Company account)
    597,016 GBP2023-03-31
    Officer
    2006-02-17 ~ now
    IIF 11 - director → ME
    2006-02-17 ~ now
    IIF 16 - secretary → ME
    Person with significant control
    2017-02-09 ~ now
    IIF 14 - Ownership of shares – More than 25% but not more than 50%OE
Ceased 13
  • 1
    CAPNADSP LIMITED - 2012-08-29
    1 Chlorine Gardens, Belfast
    Corporate (5 parents)
    Equity (Company account)
    Retained earnings (accumulated losses)
    -3,593,045 GBP2024-03-31
    Officer
    2013-12-17 ~ 2022-12-07
    IIF 9 - director → ME
  • 2
    SIGNAL CONVERSION SYSTEMS LIMITED - 1987-04-03
    Unit 1, Buckingway Business Park, Anderson Road Swavesey, Cambridge, Cambs
    Corporate (7 parents)
    Equity (Company account)
    3,515,830 GBP2021-06-30
    Officer
    ~ 2009-06-03
    IIF 13 - director → ME
  • 3
    FILTRONIC CABLE LIMITED - 2000-05-10
    KENTLEIGH LIMITED - 1997-11-05
    Plexus 1 Netpark, Thomas Wright Way, Sedgefield, County Durham, England
    Corporate (4 parents)
    Officer
    2005-03-25 ~ 2006-01-29
    IIF 6 - director → ME
  • 4
    FILTRONIC COMTEK LIMITED - 1994-07-13
    TRENTBELL LIMITED - 1992-05-12
    Flitronic House 3 Airport West, Yeadon, Leeds, West Yorkshire
    Dissolved corporate (1 parent)
    Officer
    2005-03-25 ~ 2006-01-29
    IIF 5 - director → ME
  • 5
    FILTRONIC COMTEK P.L.C. - 1998-03-02
    YPCS 28 P.L.C. - 1994-07-13
    Plexus 1 Netpark, Thomas Wright Way, Sedgefield, County Durham, England
    Corporate (5 parents, 3 offsprings)
    Officer
    2004-09-06 ~ 2006-01-29
    IIF 4 - director → ME
  • 6
    FILTRONIC (OVERSEAS HOLDINGS) LIMITED - 2006-11-22
    BROOMCO (3642) LIMITED - 2005-05-24
    Julian Arnold, John Davis & Co., 172 Gloucester Road, Bristol
    Dissolved corporate (3 parents)
    Officer
    2005-01-31 ~ 2006-01-29
    IIF 15 - director → ME
  • 7
    PULSE LK
    - now
    LK PRODUCTS (OVERSEAS HOLDINGS) - 2006-10-03
    FILTRONIC (OVERSEAS HOLDINGS) - 2005-05-24
    FILTRONIC COMTEK (OVERSEAS HOLDINGS) LIMITED - 2000-05-23
    STOCKBELT LIMITED - 1995-05-24
    Harbour Court, Compass Road North Harbour, Portsmouth, Hampshire
    Dissolved corporate (3 parents)
    Officer
    2005-03-25 ~ 2005-09-08
    IIF 3 - director → ME
  • 8
    FILTRONIC COMPOUND SEMICONDUCTORS LIMITED - 2008-03-06
    FILTRONIC COMTEK RESEARCH LIMITED - 1999-09-17
    FILTRONIC RESEARCH LIMITED - 1994-08-18
    WOLFER LIMITED - 1994-07-27
    Qorvo, 3 Waterside Drive, Arlington Business Park, Theale, Reading, England
    Dissolved corporate (4 parents)
    Officer
    2005-03-25 ~ 2006-01-29
    IIF 7 - director → ME
  • 9
    LOTHIAN AND EDINBURGH ENTERPRISE LIMITED - 2000-04-25
    Atrium Court, 50 Waterloo Street, Glasgow
    Corporate (3 parents, 1 offspring)
    Officer
    2004-09-01 ~ 2008-03-31
    IIF 8 - director → ME
  • 10
    FILTRONIC DEFENCE LIMITED - 2008-08-20
    FILTRONIC COMPONENTS LIMITED - 2007-07-04
    FILTRONIC LIMITED - 1992-06-01
    Airedale House Royal London, Industrial Estate Acorn Park, Charlestown Shipley, West Yorkshire
    Dissolved corporate (1 parent)
    Officer
    2005-03-25 ~ 2006-01-29
    IIF 2 - director → ME
  • 11
    Airedale House Royal London, Industrial Estate Acorn Park, Charlestown Shipley, West Yorkshire
    Dissolved corporate (2 parents)
    Officer
    2005-03-25 ~ 2006-01-29
    IIF 1 - director → ME
  • 12
    ESL DEFENCE (HOLDINGS) LIMITED - 2015-11-30
    BLAKEDEW 331 LIMITED - 2001-11-19
    23 Bedford Row, London, England
    Corporate (3 parents, 1 offspring)
    Equity (Company account)
    806,783 GBP2023-12-31
    Officer
    2001-11-30 ~ 2005-04-01
    IIF 10 - director → ME
  • 13
    ESL DEFENCE LIMITED - 2015-11-30
    ELETTRONICA SYSTEMS LIMITED - 2001-12-12
    23 Bedford Row, London, England
    Corporate (3 parents)
    Equity (Company account)
    3,788,000 GBP2023-12-31
    Officer
    2001-12-03 ~ 2005-04-01
    IIF 12 - director → ME
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Contains public sector information retrieved at 24 April 2025 and licensed under the Open Government Licence v3.0.