We analyse the complementarity between Lepton Flavour Violation (LFV) and LHC
experiments in probing the Supersymmetric (SUSY) Grand Unified Theories (GUT) when
neutrinos got a mass via the see--saw mechanism. Our analysis is performed in an
SO(10) framework, where at least one neutrino Yukawa coupling is necessarily as large
as the top Yukawa coupling. Our study thoroughly takes into account the whole RG
running, including the GUT and the right handed neutrino mass scales, as well as the
running of the observable neutrino spectrum. We find that the upcoming (MEG,
SuperKEKB) and future (PRISM/PRIME, Super Flavour factory) LFV experiments will be
able to test such SUSY framework for SUSY masses to be explored at the LHC and, in
some cases, even beyond the LHC sensitivity reach.