In this talk, we will discuss a phenomenological study of a concrete flavoured Supersymmetric SU(5)x S_4 model, including neutrino masses, and where the flavour texture of both the Standard model and the Supersymmetric particles is controlled by a common symmetry at the GUT scale. This framework predicts small but non-vanishing non-minimal flavour violating effects, fermion Yukawas couplings and neutrino masses, and we are in the process of performing a sophisticated data-driven parameter analysis to uncover signatures and determine the viability of this model. This MCMC based analysis includes many constraints ranging from dark matter to flavour physics and aims to accurately fit the framework against experimental data.