Lepton flavour universality tests in B decays at LHCb

The universality of the electroweak boson couplings to the different lepton flavours is a fundamental property of the Standard Model that is expected to be violated in a variety of new physics scenarios. A review of recent results obtained by the LHCb collaboration in semileptonic decays involving both charged and neutral currents is presented. The measurements were performed with the full data sample collected during the LHC Run 1, corresponding to an integrated luminosity of 3.0 fb$^{−1}$ of proton-proton collisions at centre-of-mass energies of 7 and 8 TeV. An overview of the ongoing and future measurements is also given.