“The correct approach on applications by defendants is, in my judgment, as follows: i) The court must consider whether the claimant has a “realistic” as opposed to a “fanciful” prospect of success: Swain v Hillman[2001] 2 All ER 91 ; ii) A “realistic” claim is one that carries some degree of conviction. This means a claim that is more than merely arguable: ED & F Man Liquid Products v Patel[2003] EWCA Civ 472 at [8] iii) In reaching its conclusion the court must not conduct a “mini-trial”: Swain v Hillman iv) This does not mean that the court must take at face value and without analysis everything that a claimant says in his statements before the court. In some cases it may be clear that there is no real substance in factual assertions made, particularly if contradicted by contemporaneous documents: ED & F Man Liquid Products v Patel at [10] v) However, in reaching its conclusion the court must take into account not only the evidence actually placed before it on the application for summary judgment, but also the evidence that can reasonably be expected to be available at trial: Royal Brompton Hospital NHS Trust v Hammond (No 5)[2001] EWCA Civ 550 ; vi) Although a case may turn out at trial not to be really complicated, it does not follow that it should be decided without the fuller investigation into the facts at trial than is possible or permissible on summary judgment. Thus the court should hesitate about making a final decision without a trial, even where there is no obvious conflict of fact at the time of the application, where reasonable grounds exist for believing that a fuller investigation into the facts of the case would add to or alter the evidence available to a trial judge and so affect the outcome of the case: Doncaster Pharmaceuticals Group Ltd v Bolton Pharmaceutical Co 100 Ltd[2007] FSR 63 ; vii) On the other hand it is not uncommon for an application under Part 24 to give rise to a short point of law or construction and, if the court is satisfied that it has before it all the evidence necessary for the proper determination of the question and that the parties have had an adequate opportunity to address it in argument, it should grasp the nettle and decide it. The reason is quite simple: if the respondent's case is bad in law, he will in truth have no real prospect of succeeding on his claim or successfully defending the claim against him, as the case may be. Similarly, if the applicant's case is bad in law, the sooner that is determined, the better. If it is possible to show by evidence that although material in the form of documents or oral evidence that would put the documents in another light is not currently before the court, such material is likely to exist and can be expected to be available at trial, it would be wrong to give summary judgment because there would be a real, as opposed to a fanciful, prospect of success. However, it is not enough simply to argue that the case should be allowed to go to trial because something may turn up which would have a bearing on the question of construction: ICI Chemicals & Polymers Ltd v TTE Training Ltd[2007] EWCA Civ 725 .”
"…Summary disposal will frequently be inappropriate in complex cases. If an application involves prolonged serious argument, the court should, as a rule, decline to proceed to the argument unless it harbours doubt about the soundness of the statement of case and is satisfied that striking out will obviate the necessity for a trial or will substantially reduce the burden of the trial itself: see the Three Rivers case per Lord Hope at 94–98 (pp.542–544), considering the Williams & Humbert case….It is inappropriate to deal with cases at an interim stage where there are issues of fact involved, unless the court is satisfied that all the relevant facts can be identified and clearly established: see Killick v Price Waterhouse at 20, Col.2 and 21 Col.1.…It is inappropriate to strike out a claim in an area of developing jurisprudence. In such areas, decisions should be based upon actual findings of fact: see Farah v British Airways The Times, January 26, 2000 (CA) per Lord Woolf MR at para.35 and per Chadwick LJ at para.42, applying Barrett v Enfield London Borough Council[2001] 2 AC 550 and X (Minors) v Bedfordshire CC[1995] 2 AC 633 at pp.694 and 741 ."
"The authorities therefore make clear that in the context of summary judgment the court is by no means barred from evaluating the evidence, and concluding that on the evidence there is no real (as opposed to fanciful) prospect of success. It will of course be cautious in doing so. It will bear in mind the clarity of the evidence available and the potential for other evidence to be available at trial which is likely to bear on the issues. It will avoid conducting a mini-trial. But there will be cases where the Court will be entitled to draw a line and say that even bearing well in mind all of those points - it would be contrary to principle for a case to proceed to trial."
“The object of the remedy in a case of the present kind [an unjust enrichment claim] is therefore to correct the injustice arising from the defendant’s receipt of the claimant’s services on a basis which was not fulfilled. That injustice cannot be corrected by requiring the defendant to provide the claimant with the reward which either party might have been willing to agree. That is because, in the absence of a contract, neither party’s intentions or expectations can be determinative of their mutual rights and obligations. Nor can the court make the parties’ contract for them: a contract which might have included many other terms and conditions besides a price. In such circumstances, the unjust enrichment arising from the defendant’s receipt of the claimant’s services can only be corrected by requiring the defendant to pay the claimant the monetary value of those services, thereby restoring both parties, so far as a monetary award can do so, to their previous positions.”
“If the parties to the later civil proceedings were not parties to or privies of those who were parties to the earlier proceedings then it will only be an abuse of the process of the court to challenge the factual findings and conclusions of the judge or jury in the earlier action if (i) it would be manifestly unfair to a party to the later proceedings that the same issues should be relitigated or (ii) to permit such relitigation would bring the administration of justice into disrepute.”
“to determine whether proceedings are abusive the Court must engage in a close merits-based analysis of the facts. This will take into account the private and public interests involved, and will focus on the crucial question: whether in all the circumstances a party is abusing the court’s process...”
“Subsequent use of disclosed documents… 31.22 (1) A party to whom a document has been disclosed may use the document only for the purpose of the proceedings in which it is disclosed, except where – (a) the document has been read to or by the court, or referred to, at a hearing which has been held in public; (b) the court gives permission; or (c) the party who disclosed the document and the person to whom the document belongs agree.”