assessing the impact of public sector procurement on competition volume 1 main report september 2004 prepared for office fair trading by econ any views expressed are those authors and they do not necessarily reflect oft oft742b further copies this paper can be downloaded from our website at www gov uk there is a second to 2 case studies 105 106 new bond street london w1s 1dn tel 020 7272 7766 crown copyright publication excluding logo may reproduced free charge in format or medium provided that it accurately used misleading context material must acknowledged as title specified contents chapter page summary introduction 36 3 buyer power how differs private 43 4 effects 69 5 an assessment some key practices 103 6 screening methodology related