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The above diagram shows the color scheme of the layout in the main result page. The parent entities and officers are those entities, including individual and legal persons, have significant controls over the company in focus. The offspring entities and appointments are those entities that the company 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
Active 30
  • 1
    Mason, Michael William
    Born in October 1964
    Individual (8 offsprings)
    Officer
    icon of calendar 2001-01-26 ~ now
    OF - Director → CIF 0
  • 2
    Chattaway, Ross Arron
    Born in August 1978
    Individual (1 offspring)
    Officer
    icon of calendar 2024-04-01 ~ now
    OF - Director → CIF 0
  • 3
    Young, Gary Donald
    Born in September 1961
    Individual (25 offsprings)
    Officer
    icon of calendar 2021-02-01 ~ now
    OF - Director → CIF 0
  • 4
    Brunswick, Zoe
    Born in January 1983
    Individual (1 offspring)
    Officer
    icon of calendar 2024-04-01 ~ now
    OF - Director → CIF 0
  • 5
    Duro Perez, Lara
    Born in September 1967
    Individual (2 offsprings)
    Officer
    icon of calendar 2024-04-01 ~ now
    OF - Director → CIF 0
  • 6
    Elms, Claire Ashley
    Born in November 1973
    Individual (36 offsprings)
    Officer
    icon of calendar 2019-12-01 ~ now
    OF - Director → CIF 0
  • 7
    Goodacre, Ian Robert, Dr
    Born in May 1972
    Individual (8 offsprings)
    Officer
    icon of calendar 2023-08-10 ~ now
    OF - Director → CIF 0
  • 8
    Jacobs, Louis
    Born in July 1971
    Individual (2 offsprings)
    Officer
    icon of calendar 2025-04-17 ~ now
    OF - Director → CIF 0
  • 9
    Board, Nigel Paul
    Born in April 1963
    Individual (10 offsprings)
    Officer
    icon of calendar 2005-11-02 ~ now
    OF - Director → CIF 0
  • 10
    Ryder, Alasdair Alan, Dr
    Born in September 1961
    Individual (246 offsprings)
    Officer
    icon of calendar 1999-04-28 ~ now
    OF - Director → CIF 0
    Mr Alasdair Alan Ryder
    Born in September 1961
    Individual (246 offsprings)
    Person with significant control
    icon of calendar 2016-04-06 ~ now
    PE - Ownership of voting rights - More than 25% but not more than 50% → CIF 0
  • 11
    Thomas, Hannah Lucy
    Born in June 1976
    Individual (2 offsprings)
    Officer
    icon of calendar 2022-04-01 ~ now
    OF - Director → CIF 0
  • 12
    Sparkes, Jessica
    Born in September 1986
    Individual (1 offspring)
    Officer
    icon of calendar 2024-04-01 ~ now
    OF - Director → CIF 0
  • 13
    Taylor, David Iain
    Born in April 1952
    Individual (13 offsprings)
    Officer
    icon of calendar 2023-08-10 ~ now
    OF - Director → CIF 0
  • 14
    Witherington, Peter John
    Born in May 1951
    Individual (8 offsprings)
    Officer
    icon of calendar 2023-03-31 ~ now
    OF - Director → CIF 0
  • 15
    Winkler, Robert Jonathan
    Born in January 1986
    Individual (4 offsprings)
    Officer
    icon of calendar 2024-04-01 ~ now
    OF - Director → CIF 0
  • 16
    Dennis, Michael Christopher
    Born in May 1976
    Individual (17 offsprings)
    Officer
    icon of calendar 2024-09-06 ~ now
    OF - Director → CIF 0
  • 17
    Charnock, Garry
    Born in March 1954
    Individual (6 offsprings)
    Officer
    icon of calendar 2009-07-01 ~ now
    OF - Director → CIF 0
  • 18
    Strudwick, Ian Harry
    Born in February 1969
    Individual (56 offsprings)
    Officer
    icon of calendar 2001-01-26 ~ now
    OF - Director → CIF 0
  • 19
    Silver, Mark Jonathan
    Born in May 1961
    Individual (7 offsprings)
    Officer
    icon of calendar 2025-01-13 ~ now
    OF - Director → CIF 0
  • 20
    Bresnan, Paul James
    Born in August 1966
    Individual (10 offsprings)
    Officer
    icon of calendar 2024-04-01 ~ now
    OF - Director → CIF 0
  • 21
    Redmayne, James Richard Studdart
    Born in July 1979
    Individual (7 offsprings)
    Officer
    icon of calendar 2024-09-06 ~ now
    OF - Director → CIF 0
  • 22
    Mogford, Sarah Anne Louise
    Born in August 1971
    Individual (25 offsprings)
    Officer
    icon of calendar 2019-12-01 ~ now
    OF - Director → CIF 0
  • 23
    Tuckwell, George William, Dr
    Born in October 1973
    Individual (55 offsprings)
    Officer
    icon of calendar 2019-12-01 ~ now
    OF - Director → CIF 0
  • 24
    Smyth, Mary Ann Elizabeth, Dr
    Born in March 1962
    Individual (6 offsprings)
    Officer
    icon of calendar 2001-01-26 ~ now
    OF - Director → CIF 0
  • 25
    Evans, Sally
    Individual (1 offspring)
    Officer
    icon of calendar 2019-09-06 ~ now
    OF - Secretary → CIF 0
  • 26
    Bangels, Stefan
    Born in March 1964
    Individual (1 offspring)
    Officer
    icon of calendar 2013-10-01 ~ now
    OF - Director → CIF 0
  • 27
    Scott, Steven
    Born in April 1965
    Individual (72 offsprings)
    Officer
    icon of calendar 2024-09-06 ~ now
    OF - Director → CIF 0
  • 28
    Parkinson, Gary
    Born in December 1960
    Individual (2 offsprings)
    Officer
    icon of calendar 2024-04-01 ~ now
    OF - Director → CIF 0
  • 29
    Herlihy, Francis
    Born in January 1966
    Individual (179 offsprings)
    Officer
    icon of calendar 2025-04-01 ~ now
    OF - Director → CIF 0
  • 30
    Haydock, Mark Thomas Paul
    Born in June 1979
    Individual (4 offsprings)
    Officer
    icon of calendar 2024-04-01 ~ now
    OF - Director → CIF 0
Ceased 15
  • 1
    Wray, Stephanie, Dr
    Director born in June 1966
    Individual (10 offsprings)
    Officer
    icon of calendar 2022-04-01 ~ 2024-08-15
    OF - Director → CIF 0
  • 2
    Jones, John Roger
    Director born in September 1944
    Individual (2 offsprings)
    Officer
    icon of calendar 2009-06-01 ~ 2018-08-29
    OF - Director → CIF 0
  • 3
    Hookham, Peter
    Company Director born in August 1960
    Individual
    Officer
    icon of calendar 2009-10-16 ~ 2011-06-20
    OF - Director → CIF 0
  • 4
    Edwards, Richard
    Company Director born in August 1956
    Individual (1 offspring)
    Officer
    icon of calendar 2012-10-03 ~ 2014-01-10
    OF - Director → CIF 0
    Edwards, Richard Douglas
    Born in August 1956
    Individual (1 offspring)
    Officer
    icon of calendar 2021-05-01 ~ 2023-03-31
    OF - Director → CIF 0
  • 5
    Mills, Steven Geoffrey
    Company Director born in April 1945
    Individual (5 offsprings)
    Officer
    icon of calendar 2009-10-16 ~ 2010-09-26
    OF - Director → CIF 0
    Mills, Steven Geoffrey
    Chartered Accountant
    Individual (5 offsprings)
    Officer
    icon of calendar 2007-12-03 ~ 2019-09-06
    OF - Secretary → CIF 0
  • 6
    Ryder, Alasdair Alan, Dr
    Individual (246 offsprings)
    Officer
    icon of calendar 2003-01-14 ~ 2007-12-03
    OF - Secretary → CIF 0
  • 7
    Witherington, Peter John
    Company Director born in May 1951
    Individual (8 offsprings)
    Officer
    icon of calendar 2009-10-16 ~ 2022-03-31
    OF - Director → CIF 0
  • 8
    Sljivic, Susan
    Environmental Consultant born in April 1961
    Individual (2 offsprings)
    Officer
    icon of calendar 2001-01-26 ~ 2020-03-31
    OF - Director → CIF 0
  • 9
    Barker, Ben Julius
    Investment Manager born in January 1977
    Individual (1 offspring)
    Officer
    icon of calendar 2016-12-06 ~ 2017-09-18
    OF - Director → CIF 0
  • 10
    Draper, Abigail Sarah
    Company Director born in November 1970
    Individual (7 offsprings)
    Officer
    icon of calendar 2011-10-01 ~ 2025-03-31
    OF - Director → CIF 0
  • 11
    Ryder, Sheila Caroline, Dr.
    Individual (1 offspring)
    Officer
    icon of calendar 1999-04-28 ~ 2003-01-14
    OF - Secretary → CIF 0
  • 12
    Dr Mary Ann Elizabeth Smyth
    Born in March 1962
    Individual (6 offsprings)
    Person with significant control
    icon of calendar 2019-10-07 ~ 2020-12-09
    PE - Ownership of voting rights - More than 25% but not more than 50% → CIF 0
  • 13
    Upton, Paul Stewart, Dr
    Director born in November 1956
    Individual
    Officer
    icon of calendar 2009-06-01 ~ 2022-03-31
    OF - Director → CIF 0
  • 14
    Beer, Carol Ann
    Chartered Accountant born in October 1969
    Individual
    Officer
    icon of calendar 2009-01-15 ~ 2009-10-02
    OF - Director → CIF 0
  • 15
    B.H. COMPANY SECRETARIES LIMITED
    icon of address37 London Road, Newbury, Berkshire
    Active Corporate (2 parents, 38 offsprings)
    Equity (Company account)
    2 GBP2024-07-31
    Officer
    1999-04-28 ~ 1999-04-28
    PE - Secretary → CIF 0
parent relation
Company in focus

RSK GROUP LIMITED

Previous names
RSK ENSR GROUP PLC - 2007-01-24
RSK GROUP PLC - 2018-01-02
R S K HOLDINGS LIMITED - 2003-01-20
Standard Industrial Classification
70100 - Activities Of Head Offices
Related profiles found in government register
  • RSK GROUP LIMITED
    Info
    RSK ENSR GROUP PLC - 2007-01-24
    RSK GROUP PLC - 2007-01-24
    R S K HOLDINGS LIMITED - 2007-01-24
    Registered number 03761340
    icon of addressSpring Lodge, 172 Chester Road, Helsby, Cheshire WA6 0AR
    PRIVATE LIMITED COMPANY incorporated on 1999-04-28 (26 years 7 months). The company status is Active.
    The last date of confirmation statement was made at 2025-02-13
    CIF 0
  • RSK GROUP LIMITED
    S
    Registered number 03761340
    icon of addressSpring Lodge, 172 Chester Road, Helsby, Cheshire, United Kingdom, WA6 0AR
    CIF 1 CIF 2 CIF 3
(more)
child relation
Offspring entities and appointments
Active 16
  • 1
    CONSORTIUM OF INTERNATIONAL CONSULTANTS LIMITED - 2002-07-16
    icon of addressSpring Lodge, 172 Chester Road, Helsby, Cheshire
    Dissolved Corporate (3 parents)
    Equity (Company account)
    1 GBP2020-03-31
    Person with significant control
    icon of calendar 2016-06-01 ~ dissolved
    CIF 16 - Ownership of voting rights - 75% or more → OE
    CIF 16 - Ownership of shares – 75% or more → OE
    CIF 16 - Right to appoint or remove directors → OE
  • 2
    icon of addressSpring Lodge, 172 Chester Road, Helsby, Cheshire
    Dissolved Corporate (3 parents)
    Equity (Company account)
    Retained earnings (accumulated losses)
    -100 GBP2020-03-31
    Person with significant control
    icon of calendar 2016-06-01 ~ dissolved
    CIF 17 - Ownership of voting rights - 75% or more → OE
    CIF 17 - Right to appoint or remove directors → OE
    CIF 17 - Ownership of shares – 75% or more → OE
  • 3
    icon of addressSpring Lodge, 172 Chester Road, Helsby, Cheshire
    Dissolved Corporate (3 parents)
    Equity (Company account)
    100 GBP2019-03-31
    Person with significant control
    icon of calendar 2016-06-01 ~ dissolved
    CIF 6 - Has significant influence or control as a member of a firm → OE
    CIF 6 - Ownership of shares – 75% or more → OE
    CIF 6 - Ownership of voting rights - 75% or more → OE
    CIF 6 - Right to appoint or remove directors → OE
  • 4
    RSK ENSR EASTERN EUROPE LIMITED - 2007-02-06
    icon of addressSpring Lodge, 172 Chester Road, Helsby, Cheshire
    Dissolved Corporate (3 parents)
    Equity (Company account)
    -259,000 GBP2020-03-31
    Person with significant control
    icon of calendar 2016-06-01 ~ dissolved
    CIF 10 - Right to appoint or remove directors as a member of a firm → OE
    CIF 10 - Has significant influence or control as a member of a firm → OE
    CIF 10 - Ownership of voting rights - 75% or more → OE
    CIF 10 - Ownership of shares – 75% or more → OE
  • 5
    R.S.K. ENVIRONMENT LIMITED - 2003-04-03
    RSK ENSR ENVIRONMENT LIMITED - 2007-01-22
    TAMAS LIMITED - 1989-05-18
    icon of address65 Sussex Street, Glasgow, Scotland
    Active Corporate (55 parents, 154 offsprings)
    Person with significant control
    icon of calendar 2016-04-06 ~ now
    CIF 15 - Ownership of voting rights - 75% or more → OE
    CIF 15 - Right to appoint or remove directors → OE
  • 6
    icon of addressSpring Lodge, 172 Chester Road, Helsby, Cheshire
    Active Corporate (3 parents)
    Person with significant control
    icon of calendar 2016-06-01 ~ now
    CIF 21 - Right to appoint or remove directors as a member of a firm → OE
    CIF 21 - Has significant influence or control as a member of a firm → OE
    CIF 21 - Ownership of shares – 75% or more → OE
    CIF 21 - Ownership of voting rights - 75% or more → OE
  • 7
    RSK IRAQ LIMITED - 2014-05-07
    icon of addressSpring Lodge, 172 Chester Road, Helsby, Cheshire
    Active Corporate (13 parents)
    Person with significant control
    icon of calendar 2016-06-01 ~ now
    CIF 11 - Ownership of voting rights - 75% or more → OE
    CIF 11 - Ownership of shares – 75% or more → OE
    CIF 11 - Right to appoint or remove directors → OE
  • 8
    icon of addressSpring Lodge, 172 Chester Road, Helsby, Cheshire, United Kingdom
    Active Corporate (2 parents)
    Equity (Company account)
    425,000 GBP2024-03-31
    Officer
    icon of calendar 2023-07-26 ~ now
    CIF 1 - LLP Designated Member → ME
  • 9
    icon of addressSpring Lodge, 172 Chester Road, Helsby, Cheshire
    Active Corporate (3 parents)
    Equity (Company account)
    6,387 GBP2020-03-31
    Person with significant control
    icon of calendar 2016-06-01 ~ now
    CIF 12 - Ownership of voting rights - 75% or more as a member of a firm → OE
    CIF 12 - Has significant influence or control as a member of a firm → OE
    CIF 12 - Ownership of shares – 75% or more as a member of a firm → OE
  • 10
    REMEDX LTD - 2008-09-15
    icon of addressSpring Lodge, 172 Chester Road, Helsby, Cheshire
    Dissolved Corporate (2 parents)
    Equity (Company account)
    1,010 GBP2019-03-31
    Person with significant control
    icon of calendar 2016-06-01 ~ dissolved
    CIF 5 - Right to appoint or remove directors as a member of a firm → OE
    CIF 5 - Ownership of voting rights - 75% or more → OE
    CIF 5 - Has significant influence or control as a member of a firm → OE
    CIF 5 - Ownership of shares – 75% or more → OE
  • 11
    RSK RENEWABLES LIMITED - 2025-10-21
    icon of addressSpring Lodge, 172 Chester Road, Helsby, Cheshire
    Active Corporate (3 parents)
    Equity (Company account)
    1,000 GBP2020-03-31
    Person with significant control
    icon of calendar 2016-06-01 ~ now
    CIF 7 - Ownership of voting rights - 75% or more → OE
    CIF 7 - Right to appoint or remove directors → OE
    CIF 7 - Ownership of shares – 75% or more → OE
  • 12
    icon of addressSpring Lodge, 172 Chester Road, Helsby, Cheshire
    Dissolved Corporate (3 parents)
    Equity (Company account)
    Retained earnings (accumulated losses)
    -100 GBP2020-03-31
    Person with significant control
    icon of calendar 2016-06-01 ~ dissolved
    CIF 14 - Ownership of shares – 75% or more → OE
    CIF 14 - Ownership of voting rights - 75% or more → OE
    CIF 14 - Has significant influence or control as a member of a firm → OE
    CIF 14 - Right to appoint or remove directors as a member of a firm → OE
  • 13
    icon of addressSpring Lodge, 172 Chester Road, Helsby, Cheshire
    Dissolved Corporate (3 parents)
    Person with significant control
    icon of calendar 2016-06-01 ~ dissolved
    CIF 8 - Ownership of shares – 75% or more → OE
    CIF 8 - Has significant influence or control as a member of a firm → OE
  • 14
    RSK ENSR TURKEY LIMITED - 2007-01-24
    icon of addressSpring Lodge, 172 Chester Road, Helsby, Cheshire
    Dissolved Corporate (3 parents)
    Equity (Company account)
    1 GBP2020-03-31
    Person with significant control
    icon of calendar 2016-06-01 ~ dissolved
    CIF 9 - Right to appoint or remove directors → OE
    CIF 9 - Has significant influence or control as a member of a firm → OE
    CIF 9 - Ownership of voting rights - 75% or more as a member of a firm → OE
    CIF 9 - Ownership of shares – 75% or more → OE
  • 15
    icon of addressSpring Lodge, 172 Chester Road, Helsby, Cheshire, United Kingdom
    Active Corporate (2 parents)
    Equity (Company account)
    454,820 GBP2024-03-31
    Officer
    icon of calendar 2020-07-02 ~ now
    CIF 3 - LLP Designated Member → ME
  • 16
    icon of addressSpring Lodge, 172 Chester Road, Helsby, Cheshire
    Dissolved Corporate (2 parents)
    Equity (Company account)
    1 GBP2020-03-31
    Person with significant control
    icon of calendar 2016-06-01 ~ dissolved
    CIF 13 - Ownership of shares – 75% or more as a member of a firm → OE
    CIF 13 - Ownership of shares – 75% or more → OE
    CIF 13 - Ownership of voting rights - 75% or more → OE
    CIF 13 - Has significant influence or control as a member of a firm → OE
    CIF 13 - Right to appoint or remove directors as a member of a firm → OE
Ceased 5
  • 1
    icon of addressSpring Lodge, 172 Chester Road, Helsby, Cheshire, United Kingdom
    Active Corporate (9 parents, 1 offspring)
    Person with significant control
    icon of calendar 2016-11-18 ~ 2017-11-11
    CIF 23 - Ownership of shares – 75% or more → OE
    CIF 23 - Right to appoint or remove directors → OE
    CIF 23 - Ownership of voting rights - 75% or more → OE
  • 2
    R.S.K. ENVIRONMENT LIMITED - 2003-04-03
    RSK ENSR ENVIRONMENT LIMITED - 2007-01-22
    TAMAS LIMITED - 1989-05-18
    icon of address65 Sussex Street, Glasgow, Scotland
    Active Corporate (55 parents, 154 offsprings)
    Person with significant control
    icon of calendar 2018-11-02 ~ 2018-11-03
    CIF 4 - Ownership of shares – 75% or more → OE
    icon of calendar 2016-06-01 ~ 2018-11-02
    CIF 22 - Has significant influence or control as a member of a firm → OE
    CIF 22 - Ownership of voting rights - 75% or more → OE
    CIF 22 - Right to appoint or remove directors → OE
    CIF 22 - Ownership of shares – 75% or more → OE
  • 3
    icon of addressSpring Lodge, 172 Chester Road, Helsby, Cheshire, United Kingdom
    Active Corporate (2 parents, 1 offspring)
    Equity (Company account)
    430,757 GBP2024-03-31
    Person with significant control
    icon of calendar 2023-07-26 ~ 2023-07-26
    CIF 19 - Right to surplus assets - 75% or more → OE
    Officer
    icon of calendar 2023-07-26 ~ 2023-07-26
    CIF 2 - LLP Designated Member → ME
  • 4
    icon of addressSpring Lodge, 172 Chester Road, Helsby, Cheshire, United Kingdom
    Active Corporate (2 parents)
    Equity (Company account)
    425,000 GBP2024-03-31
    Person with significant control
    icon of calendar 2023-07-26 ~ 2023-07-26
    CIF 20 - Right to surplus assets - 75% or more → OE
  • 5
    icon of addressSpring Lodge, 172 Chester Road, Helsby, Cheshire, United Kingdom
    Active Corporate (2 parents)
    Equity (Company account)
    454,820 GBP2024-03-31
    Person with significant control
    icon of calendar 2020-07-02 ~ 2022-12-23
    CIF 18 - Right to surplus assets - 75% or more → OE
    CIF 18 - Right to appoint or remove members → OE
    CIF 18 - Ownership of voting rights - 75% or more → OE

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