"a parent facing the permanent removal of their child has a right in all cases to an assessment of their choice rather than one carried out or commissioned by the local authority." “66. The simple fact is that no second assessment can be ordered, nor should it be, unless the court is satisfied that it is, within the meaning of 38(7A) of the 1989 Act orsection 13(6) of the Children and Families Act 2014 , as the case may be, "necessary to assist the court to resolve the proceedings justly": see Re S (A Child) [2014] EWCC B44 (Fam) and Re M-F (Children)[2014] EWCA Civ 991 , referring back to Re TG (Care Proceedings: Case Management: Expert Evidence)[2013] EWCA Civ 5 ,[2013] 1 FLR 1250 , and In re H-L (A Child) (Care Proceedings: Expert Evidence)[2013] EWCA Civ 655 ,[2014] 1 WLR 1160 ,[2013] 2 FLR 1434 . In determining whether an assessment is "necessary", the court must adopt a robust and realistic approach, guarding itself against being driven by what in Re S (A Child) [2014] EWCC B44 (Fam), para 38, I described as "sentiment or a hope that 'something may turn up'." “67. If, in this way, an aunt or a grandparent can be ruled out before the final hearing as not providing a realistic option, there can in principle be no reason why, in an appropriate case, one or other or even both parents should not likewise be ruled out before the final hearing as not providing a realistic option. Re B-S requires focus on the realistic options and if, on the evidence, the parent(s) are not a realistic option, then the court can at an early hearing, if appropriate having heard oral evidence, come to that conclusion and rule them out. North Yorkshire County Council v B[2008] 1 FLR 1645 is still good law. So the possibility exists, though judges should be appropriately cautious, especially if invited to rule out both parents before the final hearing or, what amounts to the same thing, ruling out before the final hearing the only parent who is putting themself forward as a carer.” "a parent facing the permanent removal of their child has a right in all cases to an assessment of their choice rather than one carried out or commissioned by the local authority." (Care Proceedings: Expert Evidence)[2013] EWCA Civ 655 ,[2014] 1 WLR 1160 ,[2013] 2 FLR 1434 . In determining whether an assessment is "necessary", the court must adopt a robust and realistic approach, guarding itself against being driven by what in Re S (A Child) [2014] EWCC B44 (Fam), para 38, I described as "sentiment or a hope that 'something may turn up'."