"Payment on account: This is not an oppressive application. It is the normal course where a claim has failed and summary assessment of costs is not possible. As to amount, the usual range for payment on account is somewhere below the 60-70% range often used on ordering security for costs, because of the stage now reached, where a degree of caution in favour of the paying party comes more to the fore. In this case, the costs are very high indeed and indicate that recovery on assessment may very well fall below the usual range. In those circumstances, a payment on account of 45% seems to be appropriate."
"Whenever a court makes an order about costs, which does not provide only for fixed costs to be paid the court should consider whether to make a summary assessment of costs."
"Where the court orders a party to pay costs to another party, other than fixed costs, it may either (a) make a summary assessment of the costs; or (b) order detailed assessment of the costs by a costs officer, unless any rule, practice direction or other enactment provides otherwise."
"In substantial and complex litigation an hourly rate in excess of the guideline figures may be appropriate for grade A, B and C fee earners where other factors, for example the value of the litigation, the level of the complexity, the urgency or importance of the matter, as well as any international element, would justify a significantly higher rate. It is important to note that these are only examples ... Further. London 1 is defined in Appendix 2 as 'very heavy commercial and corporate work by centrally based London firms.' Within that pool of work, there will be degrees of complexity and this paragraph will still be relevant."