  In the light of the recent LHC data, we study precision tests sensitive to
the violation of lepton universality, in particular the violation of unitarity
in neutrino mixing. Keeping all data we find no satisfatory fit, even allowing
for violations of unitarity in neutrino mixing. Leaving out sin$^2
\theta_{\scriptsize \mbox{eff}}$ from the hadronic forward-backward asymmetry
at LEP, we find a good fit to the data with some evidence of lepton
universality violation at the $\mathcal{O}(10^{-3})$ level.
