SCHEDULES SCHEDULE 18 Company tax returns, assessments and related mattersF1 PART 9BAClaims for relief under Schedule 12 to the Finance Act 2002F1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .