“…Very few research projects have studied PPRs in construction or manufacturing organisations, but the limited published literature that does exist in construction includes Kamara et al [6], Sowards [10], Carrillo [4] and in manufacturing includes Motteram, and Sizer, [11]; Koners and Keith [12]. The importance of PPR is emphasised by its frequent mention in different knowledge management literature including business, information technology, space project management and aerospace[pmc1] [9], construction [4], manufacturing [12], information technology [2,33], space project management [14], R & D [15], software development [16], environmental studies [17], finance [18] and operations research [19].…”