The Seebeck coefficients, electrical and thermal conductivities and Hall coefficients of a number of p-type alloys from the (Bi,Sb) 2Te 3 pseudo-binary system have been measured in the temperature range 80–370°K. The results are found to be generally consistent with the assumptions of a many-valley valence band and charge carrier mobility limited by acoustical scattering, once corrections for the effects of degeneracy have been made using exact statistics. The possibilities of temperature and degeneracy-dependent band structures are discussed in relation to anomalies in the Hall and Seebeck coefficients. The Klemens-Drabble theory of thermal resistance due to point defect scattering (with a slightly modified form for the mass fluctuation parameter) is in good agreement with the experimental values for the lattice thermal conductivity of these alloys. The doping behavior of the alloys at room temperature also confirms the assumption of acoustical scattering of the charge carriers.