"An action founded on tort shall not be brought after the expiration of six years from the date on which the cause of action accrued."
"One [question] is whether judges change the law or merely declare what it has always been. The answer to this question is clear enough. To say that they never change the law is a fiction and to base any practical decision upon such a fiction would indeed be abstract juridical correctitude. But the other question is whether a judicial decision changes the law retrospectively and here the answer is equally clear. It does. It has the immediate practical consequence that the unsuccessful party loses, notwithstanding that, in the nature of things, the relevant events occurred before the court had changed the law…"
"…while I would not regard it as necessary in order to dispose of these appeals for your Lordships to say that any change as regards the immunity rule should operate retrospectively, I consider it to be a legitimate exercise of your Lordships' judicial function to declare prospectively whether or not the immunity – which is a judge-made rule – is to be available in the future and, if so, in what circumstances."
"But I consider that this is a change in the law which should take effect only from the date when your Lordships deliver the judgment in this case. I also would dismiss these appeals but I would do so for the same reasons as those given by the Court of Appeal and not on the ground that by 1991 it was already clear that the core immunity did not extend to work done by advocates in civil cases."
"Given the conclusion that the immunity no longer exists, it follows that the appeals must fail."
"At one time the judicial function of overruling previous common law decisions was sought to be rationalised by the "declaratory" theory. Sir William Blackstone said that "if it be found that the former decision is manifestly absurd or unjust, it is declared, not that such a sentence was bad law , but that it was not law ": Commentaries on the Laws of England 1 st Ed. (1765) 401, p.70. If "law" is given one of its several possible meanings, this theory is still valid when applied to cases where a previous decision is overruled as wrong when given. Most overruling occurs on this basis. These cases are to be contrasted with cases where the later decision represents a response to changes in social conditions and expectations. Then, on any view, the declaratory approach is inapt. In this context the declaratory approach has long been discarded. It is at odds with reality."
"There can be no cause of action if there are not in existence both a potential claimant and a potential defendant and so, for example, if goods belonging to an intestate's estate are converted, time will not begin to run until letters of administration have been granted. Similarly, if the wrongdoer is entitled to diplomatic immunity at the time of the tort there is at that time no defendant capable of being sued and time will not, therefore, begin to run until he ceases to be so entitled."
" 822 Persons capable of suing or of being sued . A cause of action cannot accrue unless there is someone in existence capable of instituting the action and another person in existence who can be sued. If a person is in such a position that, even if an action were brought and judgment given against him, the judgment could not be enforced, a cause of action cannot accrue against him."
"A cause of action arises therefore at the moment when a potential plaintiff first has a right to succeed in an action against a potential defendant. There must be a plaintiff who can succeed and a defendant against whom he can succeed: see Thomson v Lord Clanmorris … A person protected by diplomatic privilege cannot be sued: Musurus Bey v Gadban …"
"Cause of action is the right to prosecute an action with effect; no one has a complete cause of action until there is somebody that he can sue."
"… That if any Person or Persons against whom there is or shall be any such Cause of Suit or Action for Seamens Wages, or against whom there shall be any Cause of Action of Trespass, Detinue, Actions Sur Trover, or Replevin for taking away Goods or Cattle, or of Action of Account, or upon the Case, or of Debt grounded upon any Lending or Contract without Speciality, of Debt for Arrearages of Rent or Assault, Menace, Battery, Wounding and Imprisonment, or any of them, be or shall be, at the Time of any such Cause or Suit or Action given or accrued, fallen, or come, beyond the Seas; that then such Person or Persons, who is or shall be intitled to any such Suit or Action, shall be at Liberty to bring the said Actions against such Person and Persons, after their return from beyond the Seas, so as they take the same after their Return from beyond the Seas, within such Times as are respectively limited for the bringing of the said Actions before by this Act, and by the said Act made in the one and twentieth Year of the Reign of King James the First."
"… That if any Person or Persons that is or are or shall be entitled to any such Action or Suit, or to such Scire Facias, is or are or shall be, at the Time of any such Cause of Action accrued, within the Age of Twenty-One Years, Feme Covert, Non compos mentis, or beyond the Seas, then such Person or Persons shall be at liberty to bring the same Actions, so as they commence the same within such Times after their coming to or being of full Age, discovert, of sound Memory, or returned from beyond the Seas, as other Persons having no such Impediment should according to the Provisions of this Act, have done; and that if any Person or Persons against whom there shall be any such Cause of Action is or are or shall be, at the Time such Cause of Action accrued, beyond the Seas, then the Person or Persons entitled to any such Cause or Action shall be at liberty to bring the same against such Person or Persons within such Times as are before limited after the Return of such Person or Persons from beyond the Seas."
"… all writs and processes that shall at any time hereafter be sued forth or prosecuted, whereby the person of any ambassador, authorized and received as such by Her Majesty, her heirs or successors, may be arrested and imprisoned, or his goods and chattels may be distrained seized, or attached, shall be deemed and adjudged to be utterly null and void to all intents constructions and purposes whatsoever."
"[An Ambassador] does not owe even a temporary allegiance to the Sovereign to whom he is accredited, and he has at least as great privileges from suits as the Sovereign whom he represents. He is not supposed even to live within the territory of the Sovereign to whom he is accredited, and, if he has done nothing to forfeit or to waive his privilege, he is for all juridical purposes supposed still to be in his own country."
"These being the principles upon which an ambassador is independent of the civil jurisdiction of the country to which he is sent, in my judgment it is clearly inconsistent with them to hold that an ambassador, who has at least as great privileges of exemption from suits as the Sovereign whom he represents, can, even apart from the 7 Anne, c. 12, have a writ sued out against him commanding him in the name of Her Majesty to appear in her Court to answer the claim of one of her subjects, even although such writ is not to be served. Moreover, what jurisdiction is there to sue out a writ in the form of a writ for service in this country against a Turk resident in Turkey, or to serve such a writ upon a Turk in Turkey? And yet this was and is the true legal position of Musurus Pacha, from the date he first became an ambassador in London until he died in Turkey in 1890."
"For these reasons, in my judgement, it is not competent either to sue out a writ against an ambassador, even though it is not to be served, or to renew it, and therefore Messrs Gadban & Watson had no cause of action against Musurus Pacha prior to December 7, 1885, when he presented his letters of recall. There is another ground which is also fatal to the contention of the plaintiff. It has been held that as on the one hand there cannot be a cause of action within the meaning of the Statute of James from which the six years will commence to run unless there be a person in existence capable of suing ( Murray v East India Co. 5 B. & A. 204, at p. 214) so on the other hand there can be no such cause of action until there is somebody who can be sued: Douglas v Forrest 4 Bing. 686, at p. 704. "
"In that case it was held that while the Turkish Ambassador was entitled to diplomatic immunity time did not run. I will not cite the judgments in that case; I will merely say that I find considerable difficulty in understanding exactly what the ratio decidendi of the Musurus Bey case was. It seems to have been based, at any rate in part, on the view of the extra-territoriality of the Ambassador, or alternatively on the non-existence of a person who could be sued."
"Diplomatic agents are not, in virtue of their privileges as such, immune from legal liability for any wrongful acts. The accurate statement is that they are not liable to be sued in the English Courts unless they submit to the jurisdiction. Diplomatic privilege does not import immunity from legal liability, but only exemption from local jurisdiction."
"The result is that if the immunity ceases, the cause of action, if not barred by the Limitation Act, 1939, will remain."
"[T]he true principle as illustrated in the cases to which I have referred is that time runs generally when a cause of action accrues and that bars to enforcement of accrued causes of action which are merely procedural do not prevent the running of time unless they are covered by one of the exceptions provided in the Limitation Act itself."