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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.

Jump to: Offsprings
Parent entities and officers
Inapplicable
parent relation
Individuals in focus

Mathieson, Mark William

    Related profiles found in government register
  • Mathieson, Mark William
    British born in September 1966

    Resident in United Kingdom

    Registered addresses and corresponding companies
  • Mathieson, Mark William
    British banker born in September 1966

    Resident in United Kingdom

    Registered addresses and corresponding companies

    • C/o Alter Domus (uk) Limited, 10th Floor, 30 St Mary Axe, London, EC3A 8BF, United Kingdom

      IIF 54 IIF 55
  • Mr Mark William Mathieson
    British born in September 1966

    Resident in United Kingdom

    Registered addresses and corresponding companies

    • 6, Greenfinch Close, Crowthorne, Berks, RG45 6TZ, United Kingdom

      IIF 56
child relation
Offspring entities and appointments 54
  • 1
    ATLASCONNECT LIMITED
    - now SC241790
    NBN BROADBAND NETWORKS LIMITED - 2004-12-03
    ATLASCONNECT LIMITED - 2003-06-26
    Inveralmond House, 200 Dunkeld Road, Perth, Perthshire
    Active Corporate (42 parents)
    Officer
    2010-12-17 ~ 2014-07-10
    IIF 35 - Director → ME
  • 2
    CADENT GAS LIMITED
    - now 10080864 09874533
    NATIONAL GRID GAS DISTRIBUTION LIMITED - 2017-05-02
    NATIONAL GRID THIRTY SEVEN LIMITED - 2016-05-05
    Cadent, Pilot Way, Ansty, Coventry, England
    Active Corporate (61 parents, 6 offsprings)
    Officer
    2018-11-28 ~ now
    IIF 4 - Director → ME
  • 3
    CONNEX BIDCO LIMITED
    15332721
    C/o Aztec Financial Services (uk) Limited Forum 4, Solent Business Park, Parkway South, Whiteley, Fareham, Hampshire, England
    Active Corporate (7 parents, 1 offspring)
    Officer
    2023-12-06 ~ now
    IIF 10 - Director → ME
  • 4
    CONNEX HOLDCO LIMITED
    15332252
    C/o Aztec Financial Services (uk) Limited Forum 4, Solent Business Park, Parkway South, Whiteley, Fareham, Hampshire, England
    Active Corporate (7 parents, 1 offspring)
    Officer
    2023-12-06 ~ now
    IIF 11 - Director → ME
  • 5
    EA TECHNOLOGY LIMITED
    - now 02566313
    Insolvency (Case 1) Corporate voluntary arrangement (CVA)
    Date of meeting to approve CVA on 2017-03-20
    Date of completion or termination of CVA on 2017-06-19
    ELECTRICITY ASSOCIATION TECHNOLOGY LIMITED - 1993-05-04
    NEATRANDOM LIMITED - 1991-05-07
    Capenhurst Technology Park, Capenhurst, Chester, Cheshire
    Active Corporate (48 parents, 2 offsprings)
    Officer
    2010-04-01 ~ 2015-06-11
    IIF 1 - Director → ME
  • 6
    ENERGY NETWORKS ASSOCIATION LIMITED
    04832301
    4 More London Riverside, London, England
    Active Corporate (99 parents, 1 offspring)
    Officer
    2007-06-01 ~ 2014-12-12
    IIF 45 - Director → ME
  • 7
    ENERVEO LIMITED - now
    SSE CONTRACTING LIMITED
    - 2021-10-27 02317133 02471438
    SOUTHERN ELECTRIC CONTRACTING LIMITED
    - 2011-09-30 02317133
    SOUTHERN ELECTRIC CONTRACTORS LIMITED - 1991-11-28
    SPECTEMP LIMITED - 1988-12-22
    Unit 34 Palmerston Business Park, Fareham, England
    Active Corporate (66 parents, 5 offsprings)
    Officer
    2010-12-17 ~ 2014-04-16
    IIF 42 - Director → ME
  • 8
    FILLY BIDCO LIMITED
    13165352
    Ropemaker Place, 28 Ropemaker Street, London, United Kingdom
    Dissolved Corporate (5 parents)
    Officer
    2021-01-28 ~ dissolved
    IIF 20 - Director → ME
  • 9
    FILLY CONSORTIUM LIMITED
    13158463
    Ropemaker Place, 28 Ropemaker Street, London, United Kingdom
    Dissolved Corporate (4 parents, 1 offspring)
    Officer
    2021-01-26 ~ dissolved
    IIF 21 - Director → ME
  • 10
    FILLY MIDCO LIMITED
    13160011
    Ropemaker Place, 28 Ropemaker Street, London, United Kingdom
    Dissolved Corporate (5 parents, 1 offspring)
    Officer
    2021-01-26 ~ dissolved
    IIF 18 - Director → ME
  • 11
    FOREV LIMITED
    - now SC581107
    CHARGEPOINT SOLUTIONS LIMITED - 2018-02-13
    CHARGE IT SOLUTIONS LIMITED - 2017-11-23
    CHARGE IT SOLUTIONS LIMITED LIMITED - 2017-11-17
    Suite 25 4-5 Lochside Way, Edinburgh Park, Edinburgh, United Kingdom
    Active Corporate (16 parents)
    Officer
    2019-02-07 ~ 2019-12-03
    IIF 9 - Director → ME
  • 12
    GAST MIDCO LIMITED
    14177081
    National Grid House Warwick Technology Park, Gallows Hill, Warwick
    Active Corporate (24 parents, 1 offspring)
    Officer
    2022-06-16 ~ 2026-05-15
    IIF 49 - Director → ME
  • 13
    GAST PLEDGECO LIMITED
    14176779
    National Grid House Warwick Technology Park, Gallows Hill, Warwick
    Active Corporate (25 parents, 1 offspring)
    Officer
    2022-06-16 ~ 2026-05-15
    IIF 48 - Director → ME
  • 14
    GAST TOPCO LIMITED
    14176279
    Insolvency (Case 1) Members voluntary liquidation
    Commencement of winding up on 2025-12-31 during the appointment or period of control
    1 More London Place, London
    Liquidation Corporate (28 parents, 1 offspring)
    Officer
    2022-06-16 ~ 2026-05-15
    IIF 13 - Director → ME
  • 15
    GEOTHERMAL INTERNATIONAL LIMITED
    - now 05397984 06432668... (more)
    Insolvency (Case 1) In administration
    Administration started on 2021-09-30
    Administration ended on 2024-04-09
    TIGBUS LIMITED - 2005-07-06
    C/o Begbies Traynor, 340 Deansgate, Manchester
    Dissolved Corporate (30 parents)
    Officer
    2008-04-03 ~ 2011-12-21
    IIF 28 - Director → ME
  • 16
    GHH GROUP HOLDINGS LTD - now
    SIMEC GHH LIMITED - 2019-07-23
    GREEN HIGHLAND HYDRO LIMITED
    - 2018-07-17 SC540972
    Cef Building Inveralmond Road, Inveralmond Industrial Estate, Perth
    Active Corporate (19 parents, 16 offsprings)
    Officer
    2016-07-22 ~ 2017-05-19
    IIF 24 - Director → ME
  • 17
    GREEN HIGHLAND RENEWABLES LTD - now
    SIMEC GHR LTD - 2021-12-13
    SIMEC GREEN HIGHLAND RENEWABLES LTD - 2018-07-17
    GREEN HIGHLAND RENEWABLES LTD
    - 2018-04-24 SC315779
    GREEN HIGHLANDER RENEWABLES LIMITED - 2007-03-23
    PERTHSHIRE RENEWABLES LIMITED - 2007-03-01
    1st Floor Cef Building Inveralmond Road, Inveralmond Industrial Estate, Perth, Scotland
    Active Corporate (38 parents, 24 offsprings)
    Officer
    2015-08-04 ~ 2017-05-19
    IIF 25 - Director → ME
  • 18
    INDIGO PIPELINES LIMITED
    - now 02742721
    SSE PIPELINES LIMITED
    - 2014-09-01 02742721
    SOUTHERN ELECTRIC PIPELINES LIMITED - 1999-12-24
    SOUTHERN ENERGY MANAGEMENT SERVICES LIMITED - 1997-05-13
    100 Brook Drive, Reading, England
    Active Corporate (35 parents, 2 offsprings)
    Officer
    2005-10-11 ~ 2006-02-27
    IIF 8 - Director → ME
    2010-12-17 ~ 2014-09-01
    IIF 44 - Director → ME
  • 19
    LAST MILE INFRASTRUCTURE (HOLDINGS) LIMITED
    - now 11626661
    ENERGETICS GROUP (HOLDINGS) LIMITED - 2019-09-05
    HIRST HOLDCO LIMITED - 2018-10-30
    Kingfisher Suite Wheelhouse, Bonds Mill Estate, Stonehouse, Gloucestershire, England
    Active Corporate (17 parents, 1 offspring)
    Officer
    2024-10-28 ~ now
    IIF 19 - Director → ME
  • 20
    LAST MILE INFRASTRUCTURE GROUP LIMITED
    - now 11534385
    ENERGETICS GROUP LIMITED - 2019-09-05
    HIRST BIDCO LIMITED - 2018-10-30
    Kingfisher Suite Wheelhouse, Bonds Mill Estate, Stonehouse, Gloucestershire, England
    Active Corporate (26 parents, 2 offsprings)
    Officer
    2024-10-28 ~ now
    IIF 23 - Director → ME
  • 21
    LAST MILE INFRASTRUCTURE HOLDCO1 LIMITED
    - now 11614308 11616387... (more)
    ENERGETICS HOLDCO1 LIMITED - 2019-09-05
    Kingfisher Suite Wheelhouse, Bonds Mill Estate, Stonehouse, Gloucestershire, England
    Active Corporate (16 parents, 1 offspring)
    Officer
    2024-10-28 ~ now
    IIF 17 - Director → ME
  • 22
    LAST MILE INFRASTRUCTURE HOLDCO2 LIMITED
    - now 11616387 11614308... (more)
    ENERGETICS HOLDCO2 LIMITED - 2019-09-05
    Kingfisher Suite Wheelhouse, Bonds Mill Estate, Stonehouse, Gloucestershire, England
    Active Corporate (16 parents, 1 offspring)
    Officer
    2024-10-28 ~ now
    IIF 22 - Director → ME
  • 23
    LUPPITER BIDCO LIMITED
    13987703
    National Grid House Warwick Technology Park, Gallows Hill, Warwick, United Kingdom
    Active Corporate (15 parents, 2 offsprings)
    Officer
    2022-03-18 ~ 2026-05-15
    IIF 52 - Director → ME
  • 24
    LUPPITER CONSORTIUM LIMITED
    13987234
    National Grid House Warwick Technology Park, Gallows Hill, Warwick, United Kingdom
    Active Corporate (15 parents, 1 offspring)
    Officer
    2022-03-18 ~ 2026-05-15
    IIF 51 - Director → ME
  • 25
    MARK MATHIESON CONSULTING LTD
    09463686
    6 Greenfinch Close, Crowthorne, Berks, United Kingdom
    Active Corporate (2 parents)
    Officer
    2015-02-27 ~ now
    IIF 7 - Director → ME
    Person with significant control
    2016-04-06 ~ now
    IIF 56 - Ownership of shares – More than 25% but not more than 50% → OE
  • 26
    MIRA CORE GAS LIMITED
    FC034501
    37 Esplanade, 3rd Floor, St Helier, Channel Islands, Jersey
    Active Corporate (11 parents)
    Officer
    2018-10-11 ~ now
    IIF 14 - Director → ME
  • 27
    MSCIF WIGHT BIDCO LIMITED
    13469990 13468085
    C/o Alter Domus (uk) Limited 10th Floor, 30 St Mary Axe, London, United Kingdom
    Active Corporate (8 parents)
    Officer
    2021-06-22 ~ 2024-12-20
    IIF 55 - Director → ME
  • 28
    MSCIF WIGHT MIDCO LIMITED
    13468085 13469990
    C/o Alter Domus (uk) Limited 10th Floor, 30 St Mary Axe, London, United Kingdom
    Active Corporate (7 parents, 1 offspring)
    Officer
    2021-06-21 ~ 2024-12-20
    IIF 54 - Director → ME
  • 29
    NATIONAL GAS METERING LIMITED
    - now 03705992 09575002... (more)
    NATIONAL GRID METERING LIMITED
    - 2023-02-06 03705992 09575002... (more)
    TRANSCO METERING SERVICES LIMITED - 2005-10-10
    TRANSCO METERING SERVICES (WALES) LIMITED - 2002-04-26
    BG METERING SERVICES (WALES) LIMITED - 2000-10-13
    National Grid House Warwick Technology Park, Gallows Hill, Warwick
    Active Corporate (61 parents)
    Officer
    2023-01-31 ~ 2026-05-15
    IIF 50 - Director → ME
  • 30
    NATIONAL GAS TRANSMISSION HOLDINGS LIMITED
    - now 03675375 10841592... (more)
    NATIONAL GRID GAS HOLDINGS LIMITED
    - 2023-02-06 03675375 02630496... (more)
    NATIONAL GRID GAS HOLDINGS PLC - 2009-01-12
    TRANSCO HOLDINGS PLC - 2005-10-10
    BG TRANSCO HOLDINGS PLC - 2000-10-23
    AILDON - 1999-09-10
    National Grid House Warwick Technology Park, Gallows Hill, Warwick
    Active Corporate (66 parents, 1 offspring)
    Officer
    2023-01-31 ~ 2026-05-15
    IIF 46 - Director → ME
  • 31
    NATIONAL GAS TRANSMISSION PLC
    - now 02006000 10841592... (more)
    NATIONAL GRID GAS PLC
    - 2023-02-06 02006000 04023840
    TRANSCO PLC - 2005-10-10
    BG TRANSCO PLC - 2000-10-23
    BG PUBLIC LIMITED COMPANY - 1999-12-13
    BRITISH GAS PUBLIC LIMITED COMPANY - 1997-02-17
    National Grid House Warwick Technology Park, Gallows Hill, Warwick
    Active Corporate (111 parents, 7 offsprings)
    Officer
    2023-01-31 ~ 2026-05-15
    IIF 47 - Director → ME
  • 32
    NEOS INTEGRATION LIMITED
    - now 03740932
    MASE INTEGRATION AND COMMUNICATION LIMITED - 2002-07-22
    55 Vastern Road, Reading, Berkshire
    Dissolved Corporate (23 parents)
    Officer
    2010-12-17 ~ dissolved
    IIF 40 - Director → ME
  • 33
    NEOS NETWORKS LIMITED - now
    SSE TELECOMMUNICATIONS LIMITED
    - 2021-03-30 SC213457
    DUNWILCO (844) LIMITED - 2001-01-08
    Level 2.1 Wellington Place, 107 West Regent Street, Glasgow, Scotland
    Active Corporate (50 parents, 4 offsprings)
    Officer
    2010-12-17 ~ 2014-07-10
    IIF 31 - Director → ME
  • 34
    NNXYZ LIMITED - now
    NEOS NETWORKS LIMITED
    - 2021-03-30 03477297 SC213457... (more)
    NEOSCORP LIMITED - 2004-01-27
    INTER DIGITAL NETWORKS LIMITED - 2001-01-31
    No.1 Forbury Place, 43 Forbury Road, Reading, United Kingdom
    Active Corporate (54 parents)
    Officer
    2010-12-17 ~ 2014-07-10
    IIF 33 - Director → ME
  • 35
    QUADGAS HOLDCO LIMITED
    10614254
    Cadent, Pilot Way, Ansty, Coventry, England
    Active Corporate (47 parents, 1 offspring)
    Officer
    2018-11-28 ~ now
    IIF 5 - Director → ME
  • 36
    QUADGAS HOLDINGS TOPCO LIMITED
    FC034104
    Csc 44 Esplanade, St Helier, Jersey
    Active Corporate (32 parents, 1 offspring)
    Officer
    2019-01-29 ~ now
    IIF 15 - Director → ME
  • 37
    QUADGAS INVESTMENTS BIDCO LIMITED
    - now 10487004
    TELLSID INVESTMENTS LIMITED - 2017-01-04
    Cadent, Pilot Way, Ansty, Coventry, England
    Active Corporate (38 parents, 1 offspring)
    Officer
    2019-01-29 ~ now
    IIF 3 - Director → ME
  • 38
    QUADGAS MIDCO LIMITED
    10615396
    Cadent, Pilot Way, Ansty, Coventry, England
    Active Corporate (46 parents, 3 offsprings)
    Officer
    2018-11-28 ~ now
    IIF 2 - Director → ME
  • 39
    QUADGAS PLEDGECO LIMITED
    10614954
    Cadent, Pilot Way, Ansty, Coventry, England
    Active Corporate (46 parents, 1 offspring)
    Officer
    2018-11-28 ~ now
    IIF 6 - Director → ME
  • 40
    ROROYERE HYDRO LTD - now
    SIMEC GHR ROROYERE LIMITED - 2019-07-22
    SIMEC GREEN HIGHLAND RENEWABLES ROROYERE LIMITED - 2018-07-17
    GREEN HIGHLAND RENEWABLES (ROROYERE) LIMITED
    - 2018-07-17 SC357527
    Inveralmond Road Inveralmond Road, Inveralmond Industrial Estate, Perth, Scotland
    Active Corporate (23 parents)
    Officer
    2015-09-04 ~ 2017-05-19
    IIF 26 - Director → ME
  • 41
    S + S LIMITED
    - now SC214382
    DUNWILCO (863) LIMITED - 2001-03-05
    Inveralmond House, 200 Dunkeld Road, Perth
    Dissolved Corporate (17 parents)
    Officer
    2007-11-21 ~ 2014-12-12
    IIF 29 - Director → ME
  • 42
    SCOTTISH AND SOUTHERN ENERGY POWER DISTRIBUTION LIMITED
    - now SC213459
    SSE POWER DISTRIBUTION LIMITED
    - 2011-09-30 SC213459 NI602832
    SSE POWER SYSTEMS LIMITED - 2001-03-05
    DUNWILCO (846) LIMITED - 2001-01-08
    Inveralmond House, 200 Dunkeld Road, Perth
    Active Corporate (31 parents, 4 offsprings)
    Officer
    2007-11-21 ~ 2014-12-12
    IIF 37 - Director → ME
  • 43
    SCOTTISH HYDRO ELECTRIC POWER DISTRIBUTION PLC
    - now SC213460
    SCOTTISH HYDRO-ELECTRIC POWER DISTRIBUTION PLC - 2007-02-02
    SCOTTISH HYDRO-ELECTRIC POWER DISTRIBUTION LIMITED - 2006-08-25
    SSE DISTRIBUTION (NORTH) LIMITED - 2001-03-08
    DUNWILCO (847) LIMITED - 2001-01-08
    Inveralmond House, 200 Dunkeld Road, Perth
    Active Corporate (40 parents)
    Officer
    2007-11-21 ~ 2014-12-12
    IIF 39 - Director → ME
  • 44
    SCOTTISH HYDRO ELECTRIC TRANSMISSION PLC
    - now SC213461
    SCOTTISH HYDRO ELECTRIC TRANSMISSION LIMITED
    - 2012-10-25 SC213461
    SCOTTISH HYDRO-ELECTRIC TRANSMISSION LIMITED - 2007-02-02
    SSE TRANSMISSION LIMITED - 2001-03-08
    DUNWILCO (848) LIMITED - 2001-01-08
    Inveralmond House, 200 Dunkeld Road, Perth
    Active Corporate (40 parents, 2 offsprings)
    Officer
    2007-11-21 ~ 2014-12-12
    IIF 41 - Director → ME
  • 45
    SMART DCC LIMITED
    08641679 02638911
    First Floor, 2 Kingdom Street, Paddington, London, England
    Active Corporate (27 parents)
    Officer
    2018-03-22 ~ 2021-04-01
    IIF 16 - Director → ME
  • 46
    SOUTHERN ELECTRIC POWER DISTRIBUTION PLC
    - now 04094290
    SSE DISTRIBUTION (SOUTH) LIMITED - 2001-03-06
    DUNWILCO (828) LIMITED - 2001-01-10
    No.1 Forbury Place, 43 Forbury Road, Reading, United Kingdom
    Active Corporate (41 parents)
    Officer
    2007-11-21 ~ 2014-12-12
    IIF 34 - Director → ME
  • 47
    SOUTHERN WATER SERVICES LIMITED
    02366670 02366620... (more)
    Southern House, Yeoman Road, Worthing, West Sussex
    Active Corporate (87 parents, 4 offsprings)
    Officer
    2021-09-08 ~ 2023-10-31
    IIF 53 - Director → ME
  • 48
    SSE (NI) POWER DISTRIBUTION LIMITED
    NI602832 SC213459
    2nd Floor, 83- 85 Great Victoria Street, Belfast, Northern Ireland
    Dissolved Corporate (10 parents)
    Officer
    2010-04-19 ~ dissolved
    IIF 27 - Director → ME
  • 49
    SSE CONTRACTING GROUP LIMITED
    - now 02471438
    SSE CONTRACTING LIMITED - 2002-08-23
    RIGHTMAIN LIMITED - 2002-04-22
    No.1 Forbury Place, 43 Forbury Road, Reading, United Kingdom
    Active Corporate (46 parents, 3 offsprings)
    Officer
    2005-09-19 ~ 2014-11-24
    IIF 43 - Director → ME
  • 50
    SSE HEAT NETWORKS LIMITED
    - now SC303682
    SSE ENERGY SERVICES LIMITED - 2010-07-15
    Inveralmond House, 200 Dunkeld Road, Perth, Perthshire
    Active Corporate (21 parents, 1 offspring)
    Officer
    2010-12-17 ~ 2014-06-03
    IIF 30 - Director → ME
  • 51
    SSE INTERCONNECTOR LIMITED
    - now 06985529
    SSE OFFSHORE TRANSMISSION LIMITED
    - 2010-12-13 06985529
    55 Vastern Road, Reading, Berkshire
    Dissolved Corporate (13 parents)
    Officer
    2009-08-17 ~ 2011-02-18
    IIF 38 - Director → ME
  • 52
    SSE UTILITY SERVICES LIMITED
    - now 01689416
    SSE UTILITY SERVICES PLC
    - 2013-02-14 01689416
    M.P. BURKE PLC - 2002-02-08
    No.1 Forbury Place, 43 Forbury Road, Reading, United Kingdom
    Active Corporate (39 parents)
    Officer
    2004-12-16 ~ 2014-12-12
    IIF 32 - Director → ME
  • 53
    SSE UTILITY SOLUTIONS LIMITED
    06894120
    No.1 Forbury Place, 43 Forbury Road, Reading, United Kingdom
    Active Corporate (16 parents, 11 offsprings)
    Officer
    2010-12-17 ~ 2014-11-24
    IIF 36 - Director → ME
  • 54
    WINDER POWER HOLDINGS LIMITED
    - now 08240305
    UTOPIA NEWCO LIMITED - 2013-06-11
    Grangefield House Richardshaw Road, Pudsey, Leeds, West Yorkshire
    Active Corporate (14 parents, 1 offspring)
    Officer
    2015-05-27 ~ 2017-09-20
    IIF 12 - Director → ME

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Contains public sector information retrieved at 22 April 2026 and licensed under the Open Government Licence v3.0.