"(i) The appropriate quantum is a matter for the court's discretion, the overall question being what is just in all the circumstances of the case. In approaching the exercise, the court will not attempt to conduct an exercise similar to a detailed assessment, but will instead approach the evidence as to the amount of costs which will be incurred on a robust basis and applying a broad brush (see also Excalibur Ventures v Texas Keystone[2012] EWHC 975 (QB) § 15). (ii) In some cases, the court may apply an overall percentage discount to a schedule of costs having regard to (a) the uncertainties of litigation, including the possibility of early settlement and (b) the fact that the costs estimate prepared for the application may well include some detailed items which the claimant could later successfully challenge on a detailed assessment between litigants. There is no hard and fast rule as to the percentage discount to apply. Each case has to be decided upon its own circumstances and it is not always appropriate to make any discount. (iii) In deciding the amount of security to award, the court may take into account the "balance of prejudice" as it is sometimes called: a comparison between the harm the applicant would suffer if too little security is given and the harm the claimant would suffer if the amount secured is too high. The balance usually favours the applicant: an under-secured applicant will be unable to recover the balance of the costs which is unsecured whereas, if the applicant is not subsequently awarded costs, or if too much security is given, the claimant may suffer only the cost of having to put up security, or the excess amount of security, as the case may be (see also Excalibur § 18). … (v) In determining the amount of security, the court must take into account the amount that the respondent is likely to be able to raise. The court should not normally make continuation of their claim dependent upon a condition which it is impossible for them to fulfil."
"once it has been established that there are "substantial obstacles" sufficient to create a real risk of non-enforcement, the starting point is that the defendant should have security for the entirety of the costs and there is no room for discounting the security figure by grading the risk using a sliding scale approach ."
"as in this case a claimant is impecunious, this provides 'an objective justification for the court exercising its discretion to make an order for payment of the full amount of the costs likely to be ordered against a claimant if unsuccessful in the litigation'"
"In Danilina , the claims were heavily dependent on the claimant's evidence, and Teare J held that if the claims failed there was a real possibility, if not a probability, that this was because the court found that she was being dishonest. Ingenious was very different in that in those proceedings the core allegation against the defendants was that they made fraudulent misrepresentations about the tax schemes they were promoting. It was for that reason that Nugee J felt that, should the court reject those allegations at trial, that could lead to an award of indemnity costs."
"The only basis for seeking 80 per cent of the estimate to which the judge referred in his judgment was the suggestion that the defendant might recover indemnity costs. For what it is worth, I have never heard of security for costs being awarded on a more generous basis for that reason,"
"The weakness of a legal argument is not, without more, justification for an indemnity basis of costs, which is in its nature penal. The position might be different if proceedings or steps taken within them are not only based on a plainly hopeless case but are motivated by some ulterior commercial or personal purpose or otherwise for purely tactical reasons unconnected with any real belief in their merit."
"It is conventional to order security to be given either by payment into Court or by the provision of a guarantee from a first class London bank. That practice recognises that the security should be in a form which enables the defendant to recover a costs award made in its favour at the trial from funds which are readily available, such that there is little risk of delay or default in enforcement. Although security may be ordered in an alternative form, that form should be such as to fulfil the same function, so as to allow simple and swift enforcement of a costs order from a creditworthy source. In practice any such alternative form of security must be such as can properly be regarded in these respects as at least equal to, if not better than, security by payment into Court or provision of a first class London bank guarantee. See Belco Trading Co. v Condo[2008] EWCA Civ 205 at paragraphs [6] to [9] and Versloot Dredging BV v HDI Gerling Industrie Versicherung AG[2013] EWHC 658 (Comm) at paragraph [10]."
"(a) the conduct of all the parties; (b) whether a party has succeeded on part of its case, even if that party has not been wholly successful; …"
" … (b) whether it was reasonable for a party to raise, pursue or contest a particular allegation or issue; (c) the manner in which a party has pursued or defended its case or a particular allegation or issue; …"
"1. The rules themselves impose no requirement to the effect that an issue-based costs order should be made only "in a suitably exceptional case", and none is to be implied, although "there needs to be a reason based on justice" for departing from the general rule, and that the question of the extent to which costs of a particular issue are to be disallowed should be left to the evaluation and discretion of the judge, "by reference to the justice and circumstances of the particular case" ( F&C Alternative Investments (Holdings) Ltd v Barthelemy (No.3)[2012] EWCA Civ 843 ;[2013] 1 WLR 548 , CA, at paras 47 and 49 per Davis LJ (a case where a proportionate costs order, made in relation to two issues on which the parties who had succeeded overall had not succeeded, was upheld)). 2. The reasonableness of taking failed points can be taken into account, and the extra costs associated with them should be considered ( Antonelli v Allen , The Times,8 December 2000 , unrep. (Neuberger J); Sycamore Bidco Ltd v Breslin[2013] EWHC 583 (Ch) ; [2013] 4 Costs LO 572 (Mann J)). 3. Where the circumstances of the case require an issue-based order in the form of an order expressed by reference to the costs of the issue, that is what the judge should make; however, generally, because of the practical difficulties which this causes, the judge should hesitate before doing so and, where practicable, the order should be expressed as a percentage or with reference to a distinct period of time (r.44.2(7)) ( Multiplex Constructions (UK) Ltd v Cleveland Bridge UK Ltd[2008] EWHC 2280 (TCC) ; [2009] 1 Costs L.R. 155 (Jackson J) at para.72(iv)). 4. There is no automatic rule requiring an issue-based cost order in the form of a reduction of a successful party's costs if he loses on one or more issues ( HLB Kidsons v Lloyds Underwriters[2007] EWHC 2699 (Comm) ; [2008] 3 Costs LR 427 (Gloster J) at para.10). The mere fact that the successful party was not successful on every last issue cannot, of itself, justify an issue-based costs order ( J Murphy & Sons Ltd v Johnson Precast Ltd (No.2)[2008] EWHC 3104 (TCC) ; [2009] 5 Costs LR 745 (Coulson J) at para.10). 5. The courts recognise that in any litigation, especially complex commercial litigation …, any winning party is likely to fail on one or more issues in the case (possibly issues on which the losing party could have taken steps to protect himself, at least to an extent, to costs liability)."