Former Labour leader David Cunliffe will chair the Regulations Review Committee, a role which traditionally goes to an Opposition MP, and Labour MP Ruth Dyson will continue to chair the Government Administration Committee.
Ms Collins resigned during the election campaign after the emergence of an email which appeared to link her to a campaign to undermine former Serious Fraud Office chief executive Adam Feeley, who answered to her. A former High Court judge is conducting an investigation.
Mr Williamson resigned after it emerged he had contacted the police about a domestic violence case involving a property developer.
The new committee chairs are as follows: Commerce, Melissa Lee; Education and Science, Jian Yang; Finance and Expenditure, David Bennett; Foreign Affairs and Defence, Mark Mitchell; Government Administration, Ruth Dyson; Health, Simon O'Connor; Justice and Electoral, Jacqui Dean; Law and Order, Mike Sabin; Local Government and Environment, Scott Simpson; Maori Affairs, Nuk Korako; Primary Production, Ian McKelvie; Regulation Review, David Cunliffe; Social Service, Alfred Ngaro; and Transport and Industrial Relations, Jonathan Young.
******
The full committee lists are as follows:
COMMERCE
Melissa Lee, National (chair)
Brett Hudson, National (deputy)
Kanwaljit Singh Bakshi, National
Simon O'Connor, National
Maurice Williamson, National
Kris Faafoi, Labour
Clayton Cosgrove, Labour
Clare Curran, Labour
Gareth Hughes, Green
EDUCATION AND SCIENCE
Dr Jian Yang, National (chair)
Paul Foster-Bell, National (deputy)
Todd Barclay, National
Judith Collins, National
Melissa Lee, National
Maurice Williamson, National
Kelvin Davis, Labour Party
Chris Hipkins, Labour Party
Dr Megan Woods, Labour Party
Catherine Delahunty, Green Party
Tracey Martin, New Zealand First
FINANCE AND EXPENDITURE
David Bennett, National (chair)
Chris Bishop, National (deputy)
Andrew Bayly, National
Jami-Lee Ross, National
Alastair Scott, National
David Seymour, Act
David Clark, Labour
Russel Norman, Green
David Parker, Labour
Grant Robertson, Labour
Winston Peters, New Zealand First
FOREIGN AFFAIRS AND DEFENCE
Mark Mitchell, National (chair)
Shane Reti, National (deputy)
David Bennett, National
Jami-Lee Ross, National
Lindsay Tisch, National
Jian Yang, National
Phil Goff, Labour
David Shearer, Labour
Kennedy Graham, Green
Fletcher Tabuteau, New Zealand First
GOVERNMENT ADMINISTRATION
Ruth Dyson, Labour (chair)
Sarah Dowie, National (deputy)
Brett Hudson, National
Mark Mitchell, National
Adrian Rurawhe, Labour
Mojo Mathers, Green
HEALTH
Simon O'Connor, National (chair)
Barbara Kuriger, National (deputy)
Jacqui Dean, National
Shane Reti, National
Scott Simpson, National
Annette King, Labour
Poto Williams, Labour
Kevin Hague, Green
Barbara Stewart, New Zealand First
JUSTICE AND ELECTORAL
Jacqui Dean, National (chair)
Jono Naylor, National (deputy)
Chris Bishop, National
Alfred Ngaro, National
Mike Sabin, National
Andrew Little, Labour
Stuart Nash, Labour
James Shaw, Green
Denis O'Rourke, New Zealand First
Marama Fox, Maori Party
LAW AND ORDER
Mike Sabin, National (chair)
Kanwaljit Singh Bakshi, National (deputy)
Ian McKelvie, National
Lindsay Tisch, National
Jonathan Young, National
Jacinda Ardern, Labour Party
Jenny Salesa, Labour Party
David Clendon, Green Party
Mahesh Bindra, New Zealand First
LOCAL GOVERNMENT AND ENVIRONMENT
Scott Simpson, National (chair)
Todd Muller, National (deputy)
Matt Doocey, National
Paul Foster-Bell, National
Joanne Hayes, National
Nuk Korako, National
Carmel Sepuloni, Labour
Su'a William Sio, Labour
Julie Anne Genter, Green
Eugenie Sage, Green
Ron Mark, New Zealand First
MAORI AFFAIRS
Nuk Korako, National (chair)
Nanaia Mahuta, Labour (deputy)
Chester Borrows, National
Joanne Hayes, National
Rino Tirikatene, Labour
Metiria Turei, Green
Pita Paraone, New Zealand First
Marama Fox, Maori Party
PRIMARY PRODUCTION
Ian McKelvie, National (chair)
Stuart Smith, National (deputy)
Hon Chester Borrows, National
Todd Barclay, National
Barbara Kuriger, National
Damien O'Connor, Labour
Meka Whaitiri, Labour
Steffan Browning, Green
Richard Prosser, New Zealand First
REGULATIONS REVIEW
David Cunliffe, Labour (chair)
Andrew Bayly, National (deputy)
Chris Bishop, National
Hon Chester Borrows, National
Andrew Little, Labour
SOCIAL SERVICES
Alfred Ngaro, National (chair)
Matt Doocey, National (deputy)
Todd Muller, National
Jono Naylor, National
Parmjeet Parmar, National
Stuart Smith, National
Sue Moroney, Labour
Louisa Wall, Labour
Jan Logie, Green
Darroch Ball New Zealand FirsT
TRANSPORT AND INDUSTRIAL RELATIONS
Jonathan Young, National (chair)
Alastair Scott, National (deputy)
Andrew Bayly, National
Judith Collins, National
Sarah Dowie, National
Parmjeet Parmar, National
Peeni Henare, Labour
Iain Lees-Galloway, Labour
Phil Twyford, Labour
Denise Roche, Green
Clayton Mitchell, New Zealand First