- Member of the Editorial Boards of Microbiology (UK) (1997-2002), Research in Microbiology (2004-2008), Journal of Biological Chemistry (2009-present) and of the Advisory Board of Molecular Microbiology (2003-present)
- Editor of Microbiology (UK) (2003-2007) and Archives of Microbiology (2003-2008)
- Member of the grant application assessment committees of CW/STW (2000) and ALW (2001-2004)
- Chair of the ALW committee for VICI applications (2005-2008)
- Consultant for GlaxoSmithKline biologicals sa (1998-present)
- Member of the boards of the Graduate School and Institute of Biomembranes (1990-2004) and the Eykman Graduate School for Infectious Diseases and Immunology (2003-2008)
- Vice-chair (2008) and co-chair (2010) of the Gordon Conference on Bacterial Cell Surfaces in New London (NH, USA)