ABSTRACT
Satisfying experimental bounds/results on flavour changing and CP violating processes obviously prohibits significant perturbations from universality for many of these parameters. There are a number of ideas for suppressing FCNC and CP processes apart from universality. They are: cancellations of SUSY contributions amongst themselves, flavour alignment, particular flavour structures, decoupling and dynamical. The chapter discusses cancellations with respect to electric dipole moments and explores some general comments. When the flavour structure is non-universal at the GUT scale there can be cancellations to various processes. Running the renormalisation group equation from the GUT to the electroweak scales, will result in the flavour non-universality thanks to the contribution from the Yukawa couplings, however they will generally be small. Thus, when considering a particular process, it is useful to consider a situation where the squark masses matrices are flavour universal and real, and to find the experimental limits on perturbations.
