  We extend a previously developed description of the flavour parameters in the
charged fermion sector, based on a U(2) flavour symmetry, to include two main
features of the neutrino sector seemingly implied by recent data: a large
mixing angle $\theta_{\mu \tau}$ and a large hierarchy in the neutrino squared
mass differences. A unified description of quark and lepton masses and mixings
emerges. The neatest quantitative predictions are for elements of the unitary
mixing matrix in the lepton sector: |V_{\mu 1}| = |V_{e 3} / V_{\mu 3}| = |V_{e
2} / V_{\tau 3}| = \sqrt{m_e / m_\mu}, which go together with the analogous
relations in the quark sector: |V_{ub} / V_{cb}| = \sqrt{m_u / m_c}, |V_{td} /
V_{ts}| = \sqrt{m_d / m_s}
