In this talk, I will consider the worst case scenario for a flavour phenomenologist: heavy new physics with an exact or approximate flavour symmetry. I will discuss how flavour violating effects can be induced at one loop, and the information that can be extracted from flavour data about even the most flavourless interactions, complementary to that provided by electroweak and Higgs observables. With a lot of data on rare flavour processes expected in the near future from LHCb, Belle II, NA62 and others, this talk will focus on pushing flavour to its limits as a tool for learning about TeV scale new physics.
