“…Successive studies have identified that the introduction of new roles at organisational level has mixed results (Read et al, 2001;Guest et al, 2004;Charters et al, 2005;Booth et al, 2006;Lathlean, 2007). New roles are ambiguous until they become established (Martin and Hutchinson, 1999) leading to difficulties in developing clear role definitions and role boundaries (e.g.…”