The issue focused on children as young as seven when police searched for six boys over alleged paedophile rings at houses in Perthshire and Glasgow. Officers seized computers and computersette tapes from houses in Bridgend and Aberdeenshire and seized computers from houses in Perthshire and Glasgow.North Wales Police said they wanted to trace five boys aged 14 and 15 who may have shared computers with Mr Cotton and Mr Morrison.Det Insp Keith Walsh said he believed there were others involved in the networks and police wanted to trace them