The red node is Wolbert. Pale nodes are charities, grey nodes are companies, and darker grey nodes are the people who sit on them. Dashed links are historical or inferred. Click any node to explore.
Person
Wolbert Gerretsen
Wolbert Gerretsen was previously a director of National Grid (US) Investments 4 Limited (until 2000) and 21 other organisations. Source: Companies House records.
Director at National Grid (US) Investments 4 Limited · Director at National Grid (US) Holdings Limited
- 0 current roles
- 22 previous roles
- Served alongside 250 people
Official record Companies House · updated 11th October 2026
Roles
22 roles across 22 organisations (0 current, 22 previous)Previous roles (22)
-
National Grid (US) Investments 4 LimitedDirector · 1999-2000
Official record · Companies House
- Source
- Companies House
- Organisation
- National Grid (US) Investments 4 Limited
- Role
- Director
- Appointed
- 1999-11-26
- Ended
- 2000-10-19
- Record reference
- Company 03867128
Previous -
National Grid (US) Holdings LimitedDirector · 1999-2000
Official record · Companies House
- Source
- Companies House
- Organisation
- National Grid (US) Holdings Limited
- Role
- Director
- Appointed
- 1999-06-03
- Ended
- 2000-10-19
- Record reference
- Company 02630496
Previous -
National Grid Holdings LimitedDirector · 1999-2000
Official record · Companies House
- Source
- Companies House
- Organisation
- National Grid Holdings Limited
- Role
- Director
- Appointed
- 1999-03-25
- Ended
- 2000-10-19
- Record reference
- Company 03096772
Previous -
National Grid International LimitedDirector · 1998-2000
Official record · Companies House
- Source
- Companies House
- Organisation
- National Grid International Limited
- Role
- Director
- Appointed
- 1998-09-23
- Ended
- 2000-10-19
- Record reference
- Company 02537092
Previous -
Logica Esis (UK) LimitedDirector · 1996-1999
Official record · Companies House
- Source
- Companies House
- Organisation
- Logica Esis (UK) Limited
- Role
- Director
- Appointed
- 1996-02-28
- Ended
- 1999-11-25
- Record reference
- Company 02444282
Previous -
National Grid Holdings ONE PLCDirector · 1995-2000
Official record · Companies House
- Source
- Companies House
- Organisation
- National Grid Holdings ONE PLC
- Role
- Director
- Appointed
- 1995-11-17
- Ended
- 2000-10-19
- Record reference
- Company 02367004
Previous -
National Grid Electricity Transmission PLCDirector · 1995-2000
Official record · Companies House
- Source
- Companies House
- Organisation
- National Grid Electricity Transmission PLC
- Role
- Director
- Appointed
- 1995-10-01
- Ended
- 2000-02-04
- Record reference
- Company 02366977
Previous -
Costain OIL, GAS & Process LimitedDirector · 1993-1995
Official record · Companies House
- Source
- Companies House
- Organisation
- Costain OIL, GAS & Process Limited
- Role
- Director
- Appointed
- 1993-08-19
- Ended
- 1995-09-26
- Record reference
- Company 00786418
Previous -
Westminster Plant CO. LimitedDirector · 1993-1995
Official record · Companies House
- Source
- Companies House
- Organisation
- Westminster Plant CO. Limited
- Role
- Director
- Appointed
- 1993-08-19
- Ended
- 1995-09-26
- Record reference
- Company 00552140
Previous -
RMD Kwikform LimitedDirector · 1992-1995
Official record · Companies House
- Source
- Companies House
- Organisation
- RMD Kwikform Limited
- Role
- Director
- Appointed
- 1992-10-31
- Ended
- 1995-04-05
- Record reference
- Company 00301199
Previous -
R. Costain & Sons LimitedDirector · until 1995
Official record · Companies House
- Source
- Companies House
- Organisation
- R. Costain & Sons Limited
- Role
- Director
- Ended
- 1995-09-26
- Record reference
- Company 00274452
Previous -
Richard Costain LimitedDirector · until 1995
Official record · Companies House
- Source
- Companies House
- Organisation
- Richard Costain Limited
- Role
- Director
- Ended
- 1995-09-26
- Record reference
- Company 00274453
Previous
- 00465462 LimitedDirector · until 1995Previous
- Costain OIL, GAS & Process (Overseas) LimitedDirector · until 1992Previous
- Costain LimitedDirector · until 1995Previous
- Renown Investments (Holdings) LimitedDirector · until 1995Previous
- Costain Building & Civil Engineering LimitedDirector · until 1995Previous
- Costain Group PLCDirector · until 1995Previous
- Costain Engineering & Construction LimitedDirector · until 1995Previous
- Costain Engineering & Construction (Overseas) LimitedDirector · until 1995Previous
- Costain Civil Engineering LimitedDirector · until 1995Previous
- Costain International LimitedDirector · until 1995Previous
Company roles, current and past, as filed at Companies House.
People Wolbert has served alongside
250 people across 22 organisationsBased on overlapping official board records. Calculated from official records It does not mean they know each other. Only formal co-service is listed: people are never joined on a matching name alone.
Costain Group PLC 75 people · 1993-2024
- Abdul Aiz Shikh Said1995-1996 dates incomplete
- Abdul Aziz Abu Bakar1995-1996 dates incomplete
- Abdul Rashid Abdul Manaff1995-1999 dates incomplete
- Abdul Wahid Bin Omar1995-2004 dates incomplete
- Ahmad Pardas Senin1995-2007 dates incomplete
- Ahmed Aly Samy1995-2015 dates incomplete
- Alexander John Vaughan1995-2019 dates incomplete
- Alison Jane Wood1995-2022 dates incomplete
- Amanda Lucia Fisher1995-2023 dates incomplete
- Aminuddin Yusof Lana1995-2004 dates incomplete
- Anders Carl Ingvar Karlsson1995-2000 dates incomplete
- Andrew Wyllie1995-2019 dates incomplete
- Anthony James Quinlan1995-2021 dates incomplete
- Anthony Oliver Bickerstaff1995-2020 dates incomplete
- Baharin Bin Salleh1995-1997 dates incomplete
- Baroness Kate Harriet Alexandra Rock1995-2022 dates incomplete
- Basil Vasiliou1995-2002 dates incomplete
- Bishoy Emad Azmy Gendi1995-2024 dates incomplete
- Charles Joseph Mccole1995-2006 dates incomplete
- Christopher Hampson1995 dates incomplete
- Clive Leonard Franks1995-2011 dates incomplete
- David George Jefferies1995-2007 dates incomplete
- David Mcmanus1995-2020 dates incomplete
- David Philip Allvey1995-2016 dates incomplete
- Dr Firdaus Bin Shafii Azman1995-1997 dates incomplete
- Dr Paul Golby1995-2022 dates incomplete
- Fiona Margaret Barkham1995-2022 dates incomplete
- Frederick William Ballard1995-2008 dates incomplete
- George Anthony David Dass1995-2000 dates incomplete
- George Victor May1995-1996 dates incomplete
- Helen Margaret Willis1995-2020 dates incomplete
- Hussein Bin Abdul Hamid Mohammed1995-1997 dates incomplete
- Jaafar, Bin Abdul Hamid, Dato1995-2000 dates incomplete
- Jacqueline De Rojas1995-2023 dates incomplete
- James Morley1995-2018 dates incomplete
- Jane Ann Lodge1995-2021 dates incomplete
- John Alexander Armitt1995-2001 dates incomplete
- John Martin Bryant1995-2012 dates incomplete
- Lennart Mikael Ekdahl1995-1999 dates incomplete
- Leslie Anne Welch Rogers1995-2004 dates incomplete
- Michael Ernest Beckett1995-2001 dates incomplete
- Michael John Quirke1995-1996 dates incomplete
- Michael Richard Alexander1995-2014 dates incomplete
- Miles William Roberts1995-2001 dates incomplete
- Mohamed Yusoff Yusli1995-2000 dates incomplete
- Mohd Azman Sulaiman1995-2008 dates incomplete
- Mohd Hussein Ab Hamid1995-2009 dates incomplete
- Nicole Ann Geoghegan1995-2022 dates incomplete
- Paul Michael Starkey1995-2013 dates incomplete
- Peter Burton1995-2001 dates incomplete
- Peter John Costain1995-1997 dates incomplete
- Peter John Hill1995-1996 dates incomplete
- Ramli Bin Mohamad1995-2001 dates incomplete
- Richard Keith Arthur Wakeling1995-1996 dates incomplete
- Saad Youssef Shehata1995-2009 dates incomplete
- Samer Ghalib Younis1995-2013 dates incomplete
- Samuel Neil Crockett1995-2023 dates incomplete
- Shamsuddin Hussain1995-1996 dates incomplete
- Sharon Harris1995-2022 dates incomplete
- Sir Francis Mcwilliams1995-1996 dates incomplete
- Staffan Bertil Schele1995-2000 dates incomplete
- Steven Lewis Mogford1995-2023 dates incomplete
- Stuart John Doughty1995-2005 dates incomplete
- Tracey Alison Wood1995-2020 dates incomplete
- Wei Thing How1995-1997 dates incomplete
- William Sperry1995-1996 dates incomplete
- Thomas Howard Parker1994-1995 dates incomplete
- Sir Terence Michael Heiser1994-1996 dates incomplete
- Nicholas Charles Faithorn Barber1993-1995 dates incomplete
- Peter Bryan Sawdy1993-1995 dates incomplete
- Peter Nicoll1993-1996 dates incomplete
- Geoffrey Langham1993-1995 dates incomplete
- Sir Christopher John Benson1993-1996 dates incomplete
Costain Limited 60 people · 1993-2026
- Abida Lalani1995-2025 dates incomplete
- Alan Charles Lovell1995-1997 dates incomplete
- Alan Kay1995-2014 dates incomplete
- Alexander John Vaughan1995-2006 dates incomplete
- Andrew Wyllie1995-2019 dates incomplete
- Anthony Oliver Bickerstaff1995-2020 dates incomplete
- Brian William Race1995-1998 dates incomplete
- Catherine Duffy1995-2019 dates incomplete
- Charles Joseph Mccole1995-2006 dates incomplete
- Charmaine Alex Seymour1995-2012 dates incomplete
- Clive Leonard Franks1995-2011 dates incomplete
- Colin Hill1995-1999 dates incomplete
- Darren Glyn James1995-2020 dates incomplete
- David Peter Swan1995-2002 dates incomplete
- David Roy Taylor1995-2024 dates incomplete
- Dr Maxine Eleanor Mayhew1995-2021 dates incomplete
- George Victor May1995-1997 dates incomplete
- Helen Margaret Willis1995-2020 dates incomplete
- Ian Parker1995-2020 dates incomplete
- John Alexander Armitt1995-2001 dates incomplete
- John David Bevan1995-2002 dates incomplete
- John Richmond Campbell1995-2000 dates incomplete
- Jonathan Kevin Willcock1995-2024 dates incomplete
- Leslie Thomas Eames1995-2008 dates incomplete
- Mark Arthur William Mervyn Lye1995-2004 dates incomplete
- Mark Rogerson1995-2013 dates incomplete
- Mark Webster Gordon1995-2006 dates incomplete
- Martin David Hunter1995-2022 dates incomplete
- Matthew Higham1995-2022 dates incomplete
- Matthew James Harris1995-2018 dates incomplete
- Miles William Roberts1995-2001 dates incomplete
- Nathan Anthony Marsh1995-2021 dates incomplete
- Nicole Ann Geoghegan1995-2022 dates incomplete
- Nigel Alistair Curry1995-2018 dates incomplete
- Paul Anthony Morris1995-2024 dates incomplete
- Paul Michael Starkey1995-2013 dates incomplete
- Peter Leslie Mumford1995-2026 dates incomplete
- Peter Michael Goodge1995-2001 dates incomplete
- Peter Richard Adams1995-2003 dates incomplete
- Robert Kenneth James Bruce1995-2002 dates incomplete
- Robert Patrick Nigel Bruce1995-2014 dates incomplete
- Roger Martyn Jones1995-1999 dates incomplete
- Ronald John Rumble1995-2003 dates incomplete
- Sally Margaret Austin1995-2019 dates incomplete
- Samuel Michael White1995-2025 dates incomplete
- Sharon Harris1995-2022 dates incomplete
- Sharon Harris1995-2022 dates incomplete
- Stephen Christopher Michael Prendergast1995-2006 dates incomplete
- Stephen Francis Wells1995-2011 dates incomplete
- Stephen Mansell Hall1995-2004 dates incomplete
- Stewart Martin Atkinson1995-1999 dates incomplete
- Stuart John Doughty1995-2005 dates incomplete
- Susan Mary Kershaw1995-2023 dates incomplete
- Tim Garnet Bowen1995-2016 dates incomplete
- Tracey Alison Wood1995-2020 dates incomplete
- William Sperry1995-1998 dates incomplete
- David Howard Jenkins1995-2010 dates incomplete
- Henry Edward Russell1995-1997 dates incomplete
- Symon John Taylor1995-2004 dates incomplete
- Thomas Joseph Conlon1995-1999 dates incomplete
- John Michael Williams1993-1995 dates incomplete
National Grid Holdings ONE PLC 53 people · 1991-2000
- Paul Lewis Joskow2000
- Richard P Sergel2000
- James Hood Ross1999-2000
- Richard Gurdon Reynolds1998-2000
- Stephen John Box1997-2000
- Fiona Brown Smith1996-2000
- Alan Victor Towers1995
- Alec Simmons1995
- Bryan Sydney Townsend1995-2000 dates incomplete
- Colin Mcdougall Gibson1995-1997
- David George Jefferies1995-1999
- David Richard Morris1995-2000 dates incomplete
- Dr Roger John Urwin1995-2000
- Eric William Chefneux1995
- Henry Roberts Casley1995
- Hugh Campbell Hamilton1995-2000 dates incomplete
Sources
- Companies House
- Officer appointments and resignations.
- Edition
- Register edition compiled 11th October 2026
- Identity
- Records are treated as the same person only where our identity-matching rules support it. Confirmed relationships are supported by the approved identity-matching evidence and rules. Likely relationships are supported by sufficient evidence to suggest the records concern the same individual, but are not established as confirmed; they are shown with the label “Likely the same person”. How people are matched
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