This paper analyses the incidence of acquisitions, and the determinant
s of expenditure or acquisitions, in a sample of 110 UK quoted compani
es, 1970-89. Financial variables, especially those related to Jensen's
'free cash flow' theory of acquisitions are found to be significant,
notably for dominant firms. But there is little support for the inclus
ion of market structure variables which seek to capture the strategic
role of acquisitions as an instrument of competition in oligopolistic
markets.