A perturbative SU (2) L × U (1) Y electroweak theory containing W , Z, photon, ghost, lepton and quark fields, but no Higgs or other fields, gives masses to W , Z and the non-neutrino fermions by means of an unconventional choice for the unperturbed Lagrangian and a novel method of renormalisation. The renormalisation extends to all orders. The masses emerge on renormalisation to one loop. To one loop the neutrinos are massless, the A ↔ Z transition drops out of the theory, the d quark is unstable and S-matrix elements are independent of the gauge parameter ξ.