Kammala wannan jumla: Gerbrandy ya zama dan majalisar Turai (MEP) a zaben 2009. Duk lokacin da yake majalisar, ya yi aiki a kwamitin kula da muhalli, lafiyar jama'a da lafiyar abinci. Tsakanin 2012 da 2014, shi ne mataimakin shugaban kwamitin. A wannan matsayin, ya jagoranci wani ɓangare na tattaunawar kan haramcin EU na "nau'in baƙi" waɗanda ke da mummunan tasiri ga muhalli. Ya kuma kasance wani bangare na wakilan Majalisar Dinkin Duniya a taron Majalisar Dinkin Duniya na Canjin Yanayi na 2014 a Lima; taron Majalisar Dinkin Duniya na Canjin Yanayi na 2015 a Paris; da kuma
Taron Canjin Yanayi na Majalisar Dinkin Duniya na 2016 a Marrakesh.