Privatization has received mixed reviews: https://www.jstor.org/stable/4411541?searchText=privatisation+in+the+u.k.&searchUri=%2Faction%2FdoBasicSearch%3Ffilter%3Ddisc%253Aeconomics-discipline%26Query%3Dprivatisation%2Bin%2Bthe%2Bu.k.%2B%26so%3Drel&ab_segments=0%2Fbasic_search_gsv2%2Fcontrol&refreqid=fastly-default%3A55e6cb098b34f79134df08b843e13cce&seq=6
Of course, there are two problem with these empirical studies. One is that history is complex and only human judgment can disentangle the knot of causal factors to isolate the impact of privatization on the empirical results. The other is that so-called privatization is really just a rearranging of the legal status of the ongoing public-private, or state capitalist, arrangement. The rearranged mix is bound to face inefficiencies from the remaining state interference not only in the organization and conduct of the enterprise itself but in the complementary areas of the economy that the enterprise relies on.