The EP working group was chaired by European Parliament Vice-President Rainer Wieland and included European Parliament Vice-Presidents Anni Podimata (SD, EL), Isabelle Durant (Greens/EFA, BE), Edward McMillan-Scott (ALDE, UK), Oldřich Vlasák (ECR, CZ), and EP Quaestor Jiří Maštálka (GUE/NGL, CZ), Francesco Enrico Speroni (EFD), Martin Ehrenhauser (NI, AT) as well as Committee on constitutional affairs chair Carlo Casini (EPP, IT) and additional MEPs Rafał Trzaskowski (EPP, PL) and Roberto Gualtieri (SD, IT) - coordinators in the Constitutional Affairs Committee.
Euroopa Parlamendi töörühma esimees oli Euroopa Parlamendi asepresident Rainer Wieland, töörühma kuulusid Euroopa Parlamendi asepresidendid Anni Podimata (SD, EL), Isabelle Durant (rohelised/EFA, BE), Edward McMillan-Scott (ALDE, UK), Oldřich Vlasák (ECR, CZ) ja Euroopa Parlamendi kvestor Jiří Maštálka (GUE/NGL, CZ), Francesco Enrico Speroni (EFD), Martin Ehrenhauser (NI, AT), põhiseaduskomisjoni esimees Carlo Casini (EPP, IT) ning parlamendiliikmed ja põhiseaduskomisjoni koordinaatorid Rafał Trzaskowski (EPP, PL) ja Roberto Gualtieri (SD, IT).