“13 Control of expert evidence, and of assessments, in children proceedings (1) A person may not without the permission of the court instruct a person to provide expert evidence for use in children proceedings. (2) Where in contravention of subsection (1) a person is instructed to provide expert evidence, evidence resulting from the instructions is inadmissible in children proceedings unless the court rules that it is admissible. (3) A person may not without the permission of the court cause a child to be medically or psychiatrically examined or otherwise assessed for the purposes of the provision of expert evidence in children proceedings. (4) Where in contravention of subsection (3) a child is medically or psychiatrically examined or otherwise assessed, evidence resulting from the examination or other assessment is inadmissible in children proceedings unless the court rules that it is admissible. (5) In children proceedings, a person may not without the permission of the court put expert evidence (in any form) before the court. (6) The court may give permission as mentioned in subsection (1), (3) or (5) only if the court is of the opinion that the expert evidence is necessary to assist the court to resolve the proceedings justly. (7) When deciding whether to give permission as mentioned in subsection (1), (3) or (5) the court is to have regard in particular to— (a) any impact which giving permission would be likely to have on the welfare of the children concerned, including in the case of permission as mentioned in subsection (3) any impact which any examination or other assessment would be likely to have on the welfare of the child who would be examined or otherwise assessed, (b) the issues to which the expert evidence would relate, (c) the questions which the court would require the expert to answer, (d) what other expert evidence is available (whether obtained before or after the start of proceedings), (e) whether evidence could be given by another person on the matters on which the expert would give evidence, (f) the impact which giving permission would be likely to have on the timetable for, and duration and conduct of, the proceedings, (g) the cost of the expert evidence, and (h) any matters prescribed by Family Procedure Rules. .../” (a) any impact which giving permission would be likely to have on the welfare of the children concerned, including in the case of permission as mentioned in subsection (3) any impact which any examination or other assessment would be likely to have on the welfare of the child who would be examined or otherwise assessed, (b) the issues to which the expert evidence would relate, (c) the questions which the court would require the expert to answer, (d) what other expert evidence is available (whether obtained before or after the start of proceedings), (e) whether evidence could be given by another person on the matters on which the expert would give evidence, (f) the impact which giving permission would be likely to have on the timetable for, and duration and conduct of, the proceedings, (g) the cost of the expert evidence, and (h) any matters prescribed by Family Procedure Rules. .../”
“25.9 General requirement for expert evidence to be given in a written report (1) Expert evidence is to be given in a written report unless the court directs otherwise. (2) The court will not direct an expert to attend a hearing unless it is necessary to do so in the interests of justice.”
“25.10 Written questions to experts (1) A party may put written questions about an expert’s report to— (a) an expert instructed by another party; or (b) a single joint expert appointed under rule 25.11. (2) Unless the court directs otherwise or a practice direction provides otherwise, written questions under paragraph (1)— (a) must be proportionate; (b) may be put once only; (c) must be put within 10 days beginning with the date on which the expert’s report was served; (d) must be for the purpose only of clarification of the report; and (e) must be copied and sent to the other parties at the same time as they are sent to the expert. (3) An expert’s answers to questions put in accordance with paragraph (1)— (a) must be given within the timetable specified by the court; and (b) are treated as part of the expert’s report. (4) Where— (a) a party has put a written question to an expert instructed by another party; and (b) the expert does not answer that question, the court may make one or both of the following orders in relation to the party who instructed the expert— (i) that the party may not rely on the evidence of that expert; or (ii) that the party may not recover the fees and expenses of that expert from any other party.” (a) an expert instructed by another party; or (b) a single joint expert appointed under rule 25.11. (a) must be proportionate; (b) may be put once only; (c) must be put within 10 days beginning with the date on which the expert’s report was served; (d) must be for the purpose only of clarification of the report; and (e) must be copied and sent to the other parties at the same time as they are sent to the expert. (a) must be given within the timetable specified by the court; and (b) are treated as part of the expert’s report. (a) a party has put a written question to an expert instructed by another party; and (b) the expert does not answer that question, (i) that the party may not rely on the evidence of that expert; or (ii) that the party may not recover the fees and expenses of that expert from any other party.”
“25.16 Discussions between experts (1) The court may, at any stage, direct a discussion between experts for the purpose of requiring the experts to— (a) identify and discuss the expert issues in the proceedings; and (b) where possible, reach an agreed opinion on those issues. (2) The court may specify the issues which the experts must discuss. (3) The court may direct that following a discussion between the experts they must prepare a statement for the court setting out those issues on which— (a) they agree; and (b) they disagree, with a summary of their reasons for disagreeing.” (a) identify and discuss the expert issues in the proceedings; and (b) where possible, reach an agreed opinion on those issues. (a) they agree; and (b) they disagree, with a summary of their reasons for disagreeing.”
“1.1 The overriding objective (1) These rules are a new procedural code with the overriding objective of enabling the court to deal with cases justly, having regard to any welfare issues involved. (2) Dealing with a case justly includes, so far as is practicable – (a) ensuring that it is dealt with expeditiously and fairly; (b) dealing with the case in ways which are proportionate to the nature, importance and complexity of the issues; (c) ensuring that the parties are on an equal footing; (d) saving expense; and (e) allotting to it an appropriate share of the court's resources, while taking into account the need to allot resources to other cases.”
“That decision should not be taken until there has been a meeting between the experts involved. It may be that agreement could then be reached; it may be that agreement is reached as a result of asking the appropriate questions.”
“[55] At a relatively high level of generality, in such a case an appellate court should have in mind two conflicting principles: the need for finality and minimising costs in litigation, on the one hand, and the even more important requirement of a fair trial, on the other. Specific factors to be taken into account would include the importance of the relevant issue both absolutely and in the context of the case; the closeness of the grounds to the points which were put to the witness; the reasonableness of the grounds not having been put, including the amount of time available for cross-examination and the amount of material to be put to the witness; whether the ground had been raised or touched on in speeches to the court, witness statements or other relevant places; and, in some cases, the plausibility of the notion that the witness might have satisfactorily answered the grounds.”
“[34] The principal questions raised on this appeal are: (i) what is the scope of the rule, based on fairness, that a party should challenge by cross-examination evidence that it wishes to impugn in its submissions at the end of the trial? (ii) in particular, does the rule extend to attacks in submissions on the reliability of a witness’s recollection and on the reasoning of an expert witness? and (iii) if the rule does so extend, was there unfairness in the way in which the trial judge conducted the trial in this case?”
“In general a party is required to challenge in cross-examination the evidence of any witness of the opposing party if he wishes to submit to the court that the evidence should not be accepted on that point. The rule applies in civil cases … In general the CPR does not alter that position.”
“70. In conclusion, the status and application of the rule in Browne v Dunn and the other cases which I have discussed can be summarised in the following propositions: (i) The general rule in civil cases, as stated in Phipson, 20th ed, para 12-12, is that a party is required to challenge by cross-examination the evidence of any witness of the opposing party on a material point which he or she wishes to submit to the court should not be accepted. That rule extends to both witnesses as to fact and expert witnesses. (ii) In an adversarial system of justice, the purpose of the rule is to make sure that the trial is fair. (iii) The rationale of the rule, i.e. preserving the fairness of the trial, includes fairness to the party who has adduced the evidence of the impugned witness. (iv) Maintaining the fairness of the trial includes fairness to the witness whose evidence is being impugned, whether on the basis of dishonesty, inaccuracy or other inadequacy. An expert witness, in particular, may have a strong professional interest in maintaining his or her reputation from a challenge of inaccuracy or inadequacy as well as from a challenge to the expert’s honesty. (v) Maintaining such fairness also includes enabling the judge to make a proper assessment of all the evidence to achieve justice in the cause. The rule is directed to the integrity of the court process itself. (vi) Cross-examination gives the witness the opportunity to explain or clarify his or her evidence. That opportunity is particularly important when the opposing party intends to accuse the witness of dishonesty, but there is no principled basis for confining the rule to cases of dishonesty. (vii) The rule should not be applied rigidly. It is not an inflexible rule and there is bound to be some relaxation of the rule, as the current edition of Phipson recognises in para 12.12 in sub-paragraphs which follow those which I have quoted in para 42 above. Its application depends upon the circumstances of the case as the criterion is the overall fairness of the trial. Thus, where it would be disproportionate to cross-examine at length or where, as in Chen v Ng, the trial judge has set a limit on the time for cross-examination, those circumstances would be relevant considerations in the court’s decision on the application of the rule. (viii) There are also circumstances in which the rule may not apply: see paras 61-68 above for examples of such circumstances.”
“Evidence cannot be evaluated and assessed in separate compartments. A judge in these difficult cases must have regard to the relevance of each piece of evidence to other evidence and to exercise an overview of the totality of the evidence in order to come to the conclusion whether the case put forward by the local authority has been made out to the appropriate standard of proof.”
“...It is wrong to describe the medical evidence as the canvas against which the other evidence was to be considered. Medical and non-medical evidence are both vital contributors in their own ways to these decisions and neither of them has precedence over the other.”
“...in reality a fair trial means that a parent should have to say little more than ‘I did not do what I am accused of doing’ and therefore ‘that expert is wrong’ [before] being entitled to have their view tested.”
“There is no conflict between the need to cross-examine with restraint and the ability to cross-examine effectively. Effective cross examination can explore and expose those areas of written evidence which are based on assumption rather than fact, on speculation rather than conviction, without trespassing beyond the boundaries imposed by reasonable restraint.”