“I shall not try to go through the cases bearing on the subject; but what I am about to state appears to me to be the result of all the cases. When a person enters into a contract, and afterwards alleges that he was so insane at the time that he did not know what he was doing, and proves the allegation, the contract is as binding on him in every respect, whether it is executory or executed, as if he had been sane when he made it, unless he can prove further that the person with whom he contracted knew him to be so insane as not to be capable of understanding what he was about.” [156] That statement of the common law must, however, now be read in the light ofCPR 21.10 (1) providing that no settlement or compromise shall be valid insofar as it relates to the claim by the patient without the approval of the court. The meaning of and the effect to be given to this rule is crucial in this case. [157] Several matters arise on the construction of that rule. The first is whether the settlement or compromise referred to in the rule can be a partial settlement…… [158] The second and important question is whether the settlement or compromise refers only to one which was made during the subsistence of the proceedings or whether it also includes a settlement or compromise of the claim (or part of it) entered into before the claim was actually made. The position was clearer under the former RSC, Ord 80 r 11 which was in the following terms: “Where in any proceedings . . . money is claimed by or on behalf of a person under a disability, no settlement, compromise or payment and no acceptance of money paid into court, whenever entered into or made, shall so far as it relates to that person's claim be valid without the approval of the court.” [Emphasis added by Ward LJ.]
“In my view, 'not valid' means having no legal effect. The settlement . . . in which the infant was interested, was only a proposed settlement until the court approved it. Either party could lawfully have repudiated it at any time before the court approved it. It had no validity by virtue of the party's agreement in the August settlement.” [161] In para 68 of his judgment in Masterman-Lister Chadwick LJ speculated whether the rule making body had power to change the substantive law expounded in Imperial Loan Co Ltd. That point was not pursued before us. My impression is that the power to make rules to govern “the practice and procedure to be followed” in the courts is wide enough to include the power to protect a patient by disapplying an agreement he had made unless the court approves of it. The suggestion that the rules were ultra vires was rejected by Lord Pearson in Dietz. He explained at p 189: – “When the claim of an infant or other person under a disability is before the court, the court needs, for the purposes of protecting his interests, full control over any settlement compromising his claim. In my view, the making and re-making of the Compromise Rule were valid exercises of the rule-making power under the Judicature Acts, which is now contained in section 99 of the Act of 1925,”
“Civil Procedure Rules may modify the rules of evidence as they apply to proceedings in any court within the scope of the rules”
“The construction of the CPR, like the construction of any legislation, primary or delegated, requires the application of ordinary canons of construction, though the CPR, unlike their predecessors, spell out in Pt 1 the overriding objective of the new procedural code. The court must seek to give effect to that objective when it exercises any power given to it by the rules or interprets any rule. But the use in r 1.1(2) of the word 'seek' acknowledges that the court can only do what is possible. The language of the rule to be interpreted may be so clear and jussive that the court may not be able to give effect to what it may otherwise consider to be the just way of dealing with the case, though in that context it should not be forgotten that the principal mischiefs which the CPR were intended to counter were excessive costs and delays.”