The MSHT Collaboration; Thomas Cridge; Lucian A Harland-Lang; Jamie McGowan; Robert S Thorne; The NNPDF Collaboration:; Richard D Ball; Alessandro Candido; Stefano Carrazza; Juan Cruz-Martinez; Luigi Del Debbio; Stefano Forte; Felix Hekhorn; Giacomo Magni; Emanuele R Nocera; Tanjona R Rabemananjara; Juan Rojo; Roy Stegeman; Maria Ubiali