  A properly defined and suitably broken $U(2)$ flavour symmetry leads to
successful quantitative relations between quark mass ratios and CKM angles. At
the same time the intrinsic distinction introduced by $U(2)$ between the third
and the first two families of quarks and leptons may support anomalies in
charged and neutral current semi-leptonic $B$-decays of the kind tentatively
observed in current flavour experiments. We show how this is possible by the
exchange of the $(3,1)_{2/3}$ vector leptoquark in two $U(2)$-models with
significantly different values of Lepton Flavour Universality violation,
observable in foreseen experiments.
