" Some mental healthcare workers are aware of clients with high needs, such as dissociative disorders and personality disorders, who have histories of sexual abuse (contact offences), usually from early childhood, involving two or more adults acting together and multiple child victims (Gold et al., 1996; McClellan et al., 1995; Middleton & Butler, 1998). This has been defined as “organised abuse” (Bibby, 1996; La Fontaine, 1993). Excluded from this definition arecases where a child is sexually abused by multiple perpetrators who are unaware of one another, such as survival sex amongst homeless youths, or where abuse is limited to a single household or family and there are no extra-familial victims (La Fontaine, 1 "