logo
explain how to read the page

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

John Charles Mayo

    Related profiles found in government register
  • John Charles Mayo
    British born in April 1956

    Resident in United Kingdom

    Registered addresses and corresponding companies

    • 12 Bedford Square, London, Wc1b3ra, United Kingdom

      IIF 1
  • Mr John Charles Mayo
    British born in April 1956

    Resident in United Kingdom

    Registered addresses and corresponding companies

    • 20-22, Wenlock Road, London, N1 7GU, England

      IIF 2 IIF 3
  • Mayo, John Charles
    British born in April 1956

    Resident in United Kingdom

    Registered addresses and corresponding companies

    • 20-22, Wenlock Road, London, N1 7GU, England

      IIF 4 IIF 5
  • Mayo, John Charles
    British accountant born in April 1956

    Resident in United Kingdom

    Registered addresses and corresponding companies

    • Suite 10, 25- 27 Heath Street, Hampstead, London, NW3 6TR, England

      IIF 6
  • Mayo, John Charles
    British chartered accountant born in April 1956

    Resident in United Kingdom

    Registered addresses and corresponding companies

    • Leverton House, 13 Bedford Square, London, WC1B 3RA, England

      IIF 7

    • Leverton House, 13 Bedford Square, London, WC1B 3RA, United Kingdom

      IIF 8
  • Mayo, John Charles
    British director born in April 1956

    Resident in United Kingdom

    Registered addresses and corresponding companies

    • Leverton House, 13 Bedford Square, London, WC1B 3RA

      IIF 9 IIF 10

    • Leverton House, 13 Bedford Square, London, WC1B 3RA, United Kingdom

      IIF 11
  • Mr John Mayo
    British born in April 1956

    Resident in United Kingdom

    Registered addresses and corresponding companies

    • Leverton House, 13 Bedford Square, London, WC1B 3RA, United Kingdom

      IIF 12
  • Mr John Charles Mayo
    British born in April 1956

    Resident in England

    Registered addresses and corresponding companies

    • Leverton House, 13 Bedford Square, London, WC1B 3RA, England

      IIF 13
  • Mr John Charles Mayo Cbe
    British born in April 1956

    Resident in England

    Registered addresses and corresponding companies

    • 21-27, Lamb's Conduit Street, London, WC1N 3GS

      IIF 14 IIF 15
  • Mayo, John Charles
    British born in April 1956

    Resident in England

    Registered addresses and corresponding companies

    • 21-27, Lamb's Conduit Street, London, WC1N 3GS

      IIF 16
  • Mayo, John Charles
    British chartered accountant born in April 1956

    Resident in England

    Registered addresses and corresponding companies
  • Mayo, John Charles
    British company director born in April 1956

    Resident in England

    Registered addresses and corresponding companies

    • 1 Ellerdale Close, Hampstead, London, NW3 6BE

      IIF 22

    • 21-27, Lambs Conduit Street, London, WC1N 3GS, England

      IIF 23
  • Mayo, John Charles
    British deputy chief executive officer born in April 1956

    Resident in England

    Registered addresses and corresponding companies

    • 1 Ellerdale Close, Hampstead, London, NW3 6BE

      IIF 24 IIF 25
  • Mayo, John Charles
    British director born in April 1956

    Resident in England

    Registered addresses and corresponding companies

    • 1 Ellerdale Close, Hampstead, London, NW3 6BE

      IIF 26 IIF 27

    • 201, Bishopsgate, London, EC2M 3AF

      IIF 28 IIF 29

    • 201, Bishopsgate, London, EC2M 3AF, United Kingdom

      IIF 30

    • 88, Wood Street, London, EC2V 7QF

      IIF 31

    • Leverton House, 13 Bedford Square, London, WC1B 3RA

      IIF 32

    • Mayer Brown International Llp, 201 Bishopsgate, London, EC2M 3AF, United Kingdom

      IIF 33 IIF 34

    • Mercury House, Triton Court, 14 Finsbury Square, London, EC2A 1BR

      IIF 35

    • 2, Toomers Wharf, Canal Walk, Newbury, Berkshire, RG14 1DY, England

      IIF 36
  • Mayo, John Charles
    British finance director born in April 1956

    Resident in England

    Registered addresses and corresponding companies
  • Mayo, John Charles
    British investment banker born in April 1956

    Resident in England

    Registered addresses and corresponding companies

    • 1 Ellerdale Close, Hampstead, London, NW3 6BE

      IIF 45
  • Mayo, John Charles
    born in April 1956

    Resident in England

    Registered addresses and corresponding companies

    • 201, Bishopsgate, London, EC2M 3AF, United Kingdom

      IIF 46 IIF 47

    • 21-27, Lamb's Conduit Street, London, WC1N 3GS

      IIF 48

    • 21-27, Lambs Conduit Street, London, WC1N 3GS, England

      IIF 49
  • Mayo, John Charles
    British investor and company director

    Registered addresses and corresponding companies

    • 201, Bishopsgate, London, EC2M 3AF, United Kingdom

      IIF 50
child relation
Offspring entities and appointments
Active 19
  • 1
    CHINA CALL LIMITED - 2016-04-02
    THE SCHOOL ENTERPRISE FRANCHISEE LIMITED - 2009-02-17
    S A COMMUNICATIONS LTD - 2008-06-18
    MAYO & CO. LIMITED - 2004-05-19
    MANN MANAGEMENT LIMITED - 2003-04-18
    109 Swan Street, Sileby, Loughborough, Leicestershire
    Dissolved Corporate (3 parents)
    Officer
    2001-09-17 ~ dissolved
    IIF 9 - Director → ME
  • 2
    PRO BONO BIO ROYALTIES BOX LIMITED - 2013-05-20
    PRO BONO BIO LIMITED - 2011-11-22
    4th Floor Reading Bridge House, George Street, Reading, Berkshire
    Dissolved Corporate (5 parents)
    Officer
    2011-08-26 ~ dissolved
    IIF 21 - Director → ME
  • 3
    BEEHIVE INNOVATIONS LTD - 2014-09-08
    Greenfield Recovery Limited, 28-30 Blucher Street, Birmingham
    Dissolved Corporate (4 parents)
    Officer
    2012-07-13 ~ dissolved
    IIF 7 - Director → ME
    Person with significant control
    2016-04-06 ~ dissolved
    IIF 13 - Ownership of voting rights - More than 50% but less than 75% → OE
    IIF 13 - Ownership of shares – More than 50% but less than 75% → OE
  • 4
    THE STRATEGIC FINANCIAL ADVICE COMPANY LLP - 2006-12-07
    21-27 Lamb's Conduit Street, London
    Active Corporate (2 parents, 4 offsprings)
    Officer
    2002-11-27 ~ now
    IIF 48 - LLP Designated Member → ME
    Person with significant control
    2016-04-06 ~ now
    IIF 15 - Ownership of voting rights - 75% or more → OE
    IIF 15 - Right to surplus assets - 75% or more → OE
  • 5
    4th Floor, Reading Bridge House George Street, Reading, Berkshire
    Dissolved Corporate (6 parents)
    Officer
    2012-11-27 ~ dissolved
    IIF 46 - LLP Designated Member → ME
  • 6
    4th Floor Reading Bridge House, George Street, Reading, Berkshire, England
    Dissolved Corporate (3 parents)
    Officer
    2005-10-11 ~ dissolved
    IIF 34 - Director → ME
  • 7
    First Floor, 1 East Poultry Avenue, London
    Dissolved Corporate (3 parents)
    Officer
    2005-06-15 ~ dissolved
    IIF 30 - Director → ME
    2005-06-15 ~ dissolved
    IIF 50 - Secretary → ME
  • 8
    4th Floor Reading Bridge House, George Street, Reading, Berkshire, England
    Dissolved Corporate (3 parents)
    Officer
    2005-10-11 ~ dissolved
    IIF 33 - Director → ME
  • 9
    S. A. INVESTORS LIMITED - 2018-09-07
    ELLERDALE NO. 1 LIMITED - 2004-06-22
    MAYO & CO. LIMITED - 2003-04-18
    21-27 Lamb's Conduit Street, London
    Active Corporate (2 parents, 1 offspring)
    Officer
    2001-09-17 ~ now
    IIF 16 - Director → ME
  • 10
    20-22 Wenlock Road, London, England
    Active Corporate (2 parents)
    Officer
    2020-03-06 ~ now
    IIF 5 - Director → ME
    Person with significant control
    2020-03-06 ~ now
    IIF 3 - Has significant influence or control → OE
  • 11
    4th Floor, Reading Bridge House George Street, Reading, Berkshire
    Dissolved Corporate (2 parents)
    Officer
    2012-07-13 ~ dissolved
    IIF 47 - LLP Designated Member → ME
  • 12
    Suite 10 25- 27 Heath Street, Hampstead, London, England
    Dissolved Corporate (2 parents)
    Officer
    2017-05-22 ~ dissolved
    IIF 6 - Director → ME
    Person with significant control
    2017-05-22 ~ dissolved
    IIF 1 - Ownership of voting rights - More than 25% but not more than 50% as a member of a firm → OE
    IIF 1 - Ownership of shares – More than 25% but not more than 50% as a member of a firm → OE
  • 13
    MEGHI LTD - 2017-09-14
    21-27 Lambs Conduit Street, London, England
    Dissolved Corporate (3 parents)
    Officer
    2016-09-14 ~ dissolved
    IIF 11 - Director → ME
    Person with significant control
    2016-09-14 ~ dissolved
    IIF 12 - Right to appoint or remove directors → OE
    IIF 12 - Ownership of voting rights - 75% or more → OE
    IIF 12 - Ownership of shares – 75% or more → OE
  • 14
    20-22 Wenlock Road, London, England
    Active Corporate (2 parents)
    Officer
    2020-03-06 ~ now
    IIF 4 - Director → ME
    Person with significant control
    2020-03-06 ~ now
    IIF 2 - Has significant influence or control → OE
  • 15
    TREATMENTS DIRECT LIMITED - 2015-05-19
    BEEHIVE GOLD LIMITED - 2014-05-21
    HWD PRECIOUS METALS LTD - 2013-06-12
    SILLAH & ASSOCIATES LIMITED - 2010-01-30
    21-27 Lambs Conduit Street, London, England
    Dissolved Corporate (2 parents)
    Officer
    2013-06-13 ~ dissolved
    IIF 23 - Director → ME
  • 16
    88 Wood Street, London
    Dissolved Corporate (4 parents, 2 offsprings)
    Officer
    2016-11-02 ~ dissolved
    IIF 31 - Director → ME
  • 17
    XENOVA GROUP PLC - 2005-09-01
    TRUSHELFCO (NO.1796) LIMITED - 1992-05-22
    First Floor, 1 East Poultry Avenue, London
    Dissolved Corporate (4 parents)
    Officer
    2005-08-31 ~ dissolved
    IIF 29 - Director → ME
  • 18
    INGENUM LIMITED - 1986-10-24
    TWENTY-SIXTH SHELF INVESTMENT COMPANY LIMITED - 1986-02-28
    First Floor, 1 East Poultry Avenue, London
    Dissolved Corporate (4 parents)
    Officer
    2005-09-01 ~ dissolved
    IIF 28 - Director → ME
  • 19
    4th Floor Reading Bridge House, George Street, Reading, Berkshire, England
    Dissolved Corporate (3 parents)
    Officer
    2007-11-15 ~ dissolved
    IIF 10 - Director → ME
Ceased 24
  • 1
    C0NTACT PARTNERS LIMITED - 2006-03-06
    ELLERDALE NO. 1 LIMITED - 2003-04-18
    Scale Space Imperial College White City Campus, 58 Wood Lane, London, United Kingdom
    Active Corporate (3 parents)
    Officer
    2001-09-17 ~ 2004-07-23
    IIF 26 - Director → ME
  • 2
    CANTAB BIOPHARMACEUTICALS LIMITED - 2020-05-19
    CAMBRIDGE BIOMANUFACTURING LIMITED - 2009-09-29
    XENOVA BIOMANUFACTURING LIMITED - 2007-01-10
    4th Floor Phoenix House, 1 Station Hill, Reading, Berkshire, United Kingdom
    Dissolved Corporate (3 parents)
    Officer
    2006-11-21 ~ 2017-05-29
    IIF 32 - Director → ME
  • 3
    CANTAB ANTI-INFECTIVES LIMITED - 2019-01-16
    4th Floor Phoenix House, 1 Station Hill, Reading, Berkshire, United Kingdom
    In Administration Corporate (3 parents)
    Officer
    2012-09-17 ~ 2017-05-29
    IIF 19 - Director → ME
  • 4
    PRO BONO BIO PLC - 2019-01-04
    C/o Alixpartners Uk Llp, 6 New Street Square, London
    In Administration Corporate (4 parents, 4 offsprings)
    Officer
    2013-09-25 ~ 2017-05-29
    IIF 17 - Director → ME
  • 5
    ZENECA GROUP PLC - 1999-04-05
    HACKPLIMCO (NO. FIVE) PUBLIC LIMITED COMPANY - 1993-02-16
    ICI BIOSCIENCE PLC - 1992-09-25
    HACKPLIMCO (NO.FIVE) PUBLIC LIMITED COMPANY - 1992-07-13
    1 Francis Crick Avenue, Cambridge Biomedical Campus, Cambridge, United Kingdom
    Active Corporate (15 parents, 2 offsprings)
    Officer
    1993-02-15 ~ 1997-10-01
    IIF 39 - Director → ME
  • 6
    21-27 Lambs Conduit Street, London, England
    Active Corporate (19 parents)
    Officer
    2023-01-01 ~ 2024-03-31
    IIF 49 - LLP Designated Member → ME
  • 7
    2 Toomers Wharf, Canal Walk, Newbury, Berkshire, England
    Dissolved Corporate (2 parents)
    Equity (Company account)
    1 GBP2023-07-31
    Officer
    2018-12-14 ~ 2023-10-18
    IIF 36 - Director → ME
  • 8
    EVER 1484 LIMITED - 2001-06-12
    Pem Salisbury House, Station Road, Cambridge
    Dissolved Corporate (3 parents)
    Officer
    2005-08-31 ~ 2006-07-28
    IIF 35 - Director → ME
  • 9
    GENERAL DOMESTIC APPLIANCES LIMITED - 1998-04-01
    HOTPOINT LIMITED - 1990-03-30
    BRITISH DOMESTIC APPLIANCES LIMITED - 1975-05-15
    A. E. I. APPLIANCES LIMITED - 1966-06-29
    THE HOTPOINT ELECTRIC APPLIANCE COMPANY LIMITED - 1961-01-30
    Morley Way, Peterborough
    Active Corporate (7 parents, 3 offsprings)
    Officer
    1997-10-22 ~ 2001-04-09
    IIF 42 - Director → ME
  • 10
    S. A. INVESTORS LIMITED - 2018-09-07
    ELLERDALE NO. 1 LIMITED - 2004-06-22
    MAYO & CO. LIMITED - 2003-04-18
    21-27 Lamb's Conduit Street, London
    Active Corporate (2 parents, 1 offspring)
    Person with significant control
    2016-04-06 ~ 2020-11-24
    IIF 14 - Ownership of shares – More than 25% but not more than 50% → OE
    IIF 14 - Ownership of voting rights - More than 25% but not more than 50% → OE
  • 11
    IMPKEMIX (NO.5) LIMITED - 1978-12-31
    Deloitte Llp, Po Box 500 2 Hardman Street, Manchester
    Dissolved Corporate (4 parents)
    Officer
    1993-01-14 ~ 1997-09-16
    IIF 43 - Director → ME
  • 12
    4th Floor, Reading Bridge House George Street, Reading, Berkshire
    Dissolved Corporate (1 parent)
    Officer
    2012-08-14 ~ 2016-04-01
    IIF 8 - Director → ME
  • 13
    MARCONI PLC - 2003-10-21
    8 Salisbury Square, London
    Dissolved Corporate
    Officer
    1999-10-04 ~ 2001-07-06
    IIF 24 - Director → ME
  • 14
    MARCONI (DGP2) LIMITED - 2006-03-21
    GEC (DGP2) LIMITED - 2001-02-15
    SERTICA LIMITED - 1998-05-20
    Point 3 Haywood Road, Warwick
    Dissolved Corporate (2 parents)
    Officer
    1998-06-05 ~ 2001-07-06
    IIF 25 - Director → ME
  • 15
    ISSUEBONUS LIMITED - 1990-09-24
    St. James' Park, Newcastle Upon Tyne
    Active Corporate (7 parents, 22 offsprings)
    Officer
    1997-02-27 ~ 1998-05-27
    IIF 27 - Director → ME
  • 16
    PENTLAND BRANDS LAKESIDE PLC - 2016-07-07
    PENTLAND BRANDS PLC - 2016-01-12
    PENTLAND BRANDS PLC - 2010-04-07
    PENTLAND GROUP PLC - 2002-12-09
    BERTRAMS INVESTMENT TRUST PLC - 1989-07-31
    BERTRAMS PUBLIC LIMITED COMPANY - 1986-05-16
    115 4th Floor, 115 George Street, Edinburgh
    Active Corporate (5 parents, 1 offspring)
    Officer
    1993-12-08 ~ 1999-11-15
    IIF 22 - Director → ME
  • 17
    C/o Alixpartners Uk Llp 6, New Street Square, London
    In Administration Corporate (3 parents)
    Officer
    2011-10-11 ~ 2017-05-29
    IIF 20 - Director → ME
  • 18
    4th Floor Phoenix House, 1 Station Hill, Reading, Berkshire, United Kingdom
    Liquidation Corporate (4 parents, 1 offspring)
    Officer
    2011-10-07 ~ 2017-05-29
    IIF 18 - Director → ME
  • 19
    R&Q BETA COMPANY LIMITED - 2018-04-13
    ASTRAZENECA INSURANCE COMPANY LIMITED - 2017-07-03
    ZENECA INSURANCE COMPANY LIMITED - 1999-11-19
    ZENECA UNDERWRITING LIMITED - 1994-09-01
    HACKREMCO (NO.903) LIMITED - 1994-06-29
    71 Fenchurch Street, London, United Kingdom
    Converted / Closed Corporate (5 parents)
    Officer
    1994-06-30 ~ 1997-09-16
    IIF 44 - Director → ME
  • 20
    S.G.WARBURG & CO.LIMITED - 2003-06-06
    5 Broadgate, London, United Kingdom
    Active Corporate (6 parents)
    Officer
    ~ 1992-09-25
    IIF 45 - Director → ME
  • 21
    ZENECA LIMITED - 2000-11-21
    ICI BIOSCIENCE LIMITED - 1992-11-18
    HACKREMCO (NO.757) LIMITED - 1992-09-25
    Syngenta, Jealott's Hill International Research Centre, Bracknell, Berkshire, United Kingdom
    Active Corporate (5 parents)
    Officer
    ~ 1997-10-01
    IIF 37 - Director → ME
  • 22
    TELENT COMMUNICATIONS LIMITED - 2008-03-03
    MARCONI COMMUNICATIONS LIMITED - 2006-01-24
    GPT LIMITED - 1998-09-10
    GEC PLESSEY TELECOMMUNICATIONS LIMITED - 1991-04-02
    GEC TELECOMMUNICATIONS LIMITED - 1989-04-01
    Abel Smith House, Gunnels Wood Road, Stevenage, England
    Active Corporate (13 parents, 5 offsprings)
    Officer
    1997-11-07 ~ 1998-08-17
    IIF 38 - Director → ME
  • 23
    TELENT COMMUNICATIONS HOLDINGS LIMITED - 2025-08-13
    MARCONI COMMUNICATIONS HOLDINGS LIMITED - 2006-03-21
    GPT HOLDINGS LIMITED - 1998-12-04
    PLESSEY TELECOMMUNICATIONS (INTERNATIONAL) LIMITED - 1990-04-17
    PLESSEY MEDITERRANEAN & MIDDLE EAST LIMITED - 1983-05-13
    INTERNATIONAL AUTOMATIC TELEPHONE AND ELECTRIC CO. LIMITED (THE) - 1978-12-31
    PLESSEY APPLIED MICROELECTRONICS LIMITED - 1978-12-31
    4th Floor, 95 Gresham Street, London, England
    Active Corporate (4 parents)
    Officer
    1997-11-07 ~ 1998-08-17
    IIF 40 - Director → ME
  • 24
    TELENT LIMITED - 2025-08-13
    TELENT PLC - 2008-03-03
    MARCONI CORPORATION PLC - 2006-01-24
    GENERAL ELECTRIC COMPANY P L C(THE) - 2000-03-07
    GENERAL ELECTRIC COMPANY P. L. C.(THE) - 1985-10-04
    4th Floor, 95 Gresham Street, London, England
    Active Corporate (3 parents, 13 offsprings)
    Officer
    1997-10-01 ~ 2001-01-26
    IIF 41 - Director → ME

qrcode

Privacy notice

Terms and conditions

The content of this website is protected by AgonGuard.

© 2022- Polylogarithmic Technology Ltd (Registered in England and Wales No. 14256313). All rights reserved.

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