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There is renewed focus on the thermoelectric properties of Bi-Sb. Reduced dimensionality samples of these alloys, such as nanowires, may exhibit exotic behavior that relate to the properties of the surfaces of topological insulators. It has been predicted that surface states of topological insulators have large thermopower and also ultrahigh mobilities. The authors report results of magneto-thermoelectric investigation of single crystal Bi1-xSbx nanowires in a glass cover with diameters ranging from 90 nm to 5 μm. The wide-ranging antimony concentration (0.01 < x < 0.2) enabled us to study the effect of nanowire dimensionality the (bulk) semimetal (x <0.05), semi-conductor 0.08