“10.CPR 25.7 provides that the Court must not order an interim payment of more than a reasonable proportion of the likely amount of the final judgment. In Ultraframe (UK) Ltd v Eurocell Building Plastics Ltd[2005] EWHC 2111 (Ch) Pumfrey J. provided the following guidance as to the matters the court should take into account in determining what, if any, order to make: ‘1. Generally, interim payment procedures are not suitable where factual issues are complicated, or where difficult points of law arise; 2. This does not prevent an award from being made even in respect of part of a complex claim if that part can be identified as what Robert Walker J. calls “an irreducible minimum part without venturing too far into the disputed area of fact or law”; 3. It may well be appropriate simply to ignore certain heads of claim altogether whilst concentrating on those parts of the claim which can be assessed on established principles with some confidence; 4. While a broad brush approach to detail may be appropriate to an enquiry as to damages (see, for example, Gerber Garment Technology Inc v Lectra Systems Ltd [1997] R.P.C. 443 ), at this stage it is also necessary to take a conservative view, however broad the brush employed is. 5. Even though the rule contains provision to accommodate over-payment, the extent to which comfort can be derived from the thought that even if the amount awarded under heads that are considered at the interim stages excessive, the other unconsidered heads can make up for it is strictly limited. Hence Robert Walker J.’s reference to “irreducible minimum” reflects a fundamental feature of the jurisdiction. All the same, I do not think the phrase merely suggests that the sums awarded must be undisputed. There is room for a degree of uncertainty provided that it is treated in a conservative manner.’ 11 In my judgment, the task of the court can be expressed rather more simply as being to ascertain what sum it can safely be assumed the claimant will recover in any event.”