“ [23] In any claim for injury to earning capacity based on long-term disability, the task of the court in assessing a fair figure for future earnings loss can only be effected by forming a view as to the most likely future working career (the career model) of the claimant had he not been injured. Where, at the time of the accident, a claimant is in an established job or field of work in which he was likely to have remained but for the accident, the working assumption is that he would have done so and conventional multiplier/ multiplicand method of calculation is adopted, the court taking into account any reasonable prospects of promotion and/or movement to a higher salary scale or into a better remunerated field of work, by adjusting the multiplicand at an appropriate point along the scale of the multiplier. However, if a move of job or change of career at some stage is probable, it need only be allowed for so far as it is likely to increase or decrease the level of the claimant’s earnings at the stage of his career at which it is regarded as likely to happen. If such a move or change is unlikely significantly to affect the future level of earnings, it may be ignored in the multiplicand/ multiplier exercise, save that it will generally be appropriate to make a (moderate) discount in the multiplier in respect of contingencies or ‘the vicissitudes of life’. [24] In the situation of a young claimant who has not yet been in employment at the time of injury but is still in education or has otherwise not embarked on his career….it may or may not be appropriate to select a specific career model in his chosen field. In this connection the court will have regard to the claimant’s previous performance, expressed intentions and ambitions, the opportunities reasonably open to him and any steps he has already taken to pursue a particular path. In many cases it will not be possible to identify a specific career model and it may be necessary simply to resort to national average earnings figures for persons of the claimant’s ability and qualifications in his likely field(s) of activity. In other cases, however, it may be possible with confidence to select a career model appropriate to be used as the multiplicand for calculating loss. In either case, the purpose and function of the exercise is simply to select an appropriate ‘baseline’ for calculation of the claimant’s probable future earnings whatever his future occupation may in fact turn out to be. Thus if the career model chosen is based upon a specific occupation…, the chance or possibility that the claimant will not in the event enter that occupation or, having done so, may leave it, will not be significant if the likelihood is that he will find alternative employment at a similar level of remuneration. [25] These are truisms so far as the conventional approach to the assessment of injury to earning capacity is concerned. Similarly, it is a truism that the assessment of future loss in this field is in a broad sense the assessment of a chance or, more accurately, a series of chances as to the likely future progress of the claimant in obtaining, retaining or changing his employment, obtaining promotion, or otherwise increasing his remuneration. None the less, such assessment has not traditionally been regarded as necessitating application of the technique of percentage assessment for ‘loss of a chance’ based on th elikely actions of third parties, as articulated by Stuart-Smith LJ in Allied Maples Group Ltd v Simmons & Simmons ...[1995] 1 WLR 1602 . In cases such as Doyle v Wallace [1998] PIQR Q146 and Langford v Hebran [2001] PIQR Q160 the court has in special circumstances felt obliged to adopt such a method in order to calculate particular aspects of the claimant’s future loss claim. However, those decisions have not purported generally to replace the traditional method of adjusting the multiplier or multiplicand within the career model appropriate to the particular claimant so as to reflect (a) the likelihood of an increase in earnings at some point in the claimant’s career and (b) those contingencies/ vicissitudes in respect of a which a discount appears to be appropriate. [26] The cases in which the percentage ‘loss of a chance’ approach has been adopted appear to …be those where the chance assessed has been the chance that the career of the claimant will take a particular course leading to significantly higher overall earnings than those which it is otherwise reasonable to take as the baseline for calculation. …. In a case where the career model adopted by the judge has been chosen because it is itself the appropriate baseline and/or is one of a number of alternatives likely to give more or less similar results, then it is neither necessary nor appropriate to adopt the percentage chance in respect of the possibility that the particular career will not be followed after all….”
“…was substantial. If it was it must be evaluated. If it was a mere possibility it must be ignored. Many different words could be and have been used to indicate the dividing line. I can think of none better than 'substantial’, on the one hand, or ‘speculative’ on the other. It must be left to the good sense of the tribunal to decide on broad lines, without regard to legal niceties, but on a consideration of all the facts in proper perspective…. ”
“ …of some importance is the issue-specific nature of the test; that is to say the requirement to consider the question of capacity in relation to the particular transaction (its nature and complexity) in respect of which the decisions as to capacity fall to be made. It is not difficult to envisage plaintiffs in personal injury actions with capacity to deal with all matters and take all ‘lay client’ decisions related to their actions up to and including a decision whether or not to settle, but lacking capacity to decide (even with advice) how to administer a large award. In such a case I see no justification for the assertion that the plaintiff is to be regarded as a patient from the commencement of proceedings.”
“…first the insight and understanding of the fact that she has a problem in respect of which she needs advice…Secondly, having identified the problem it will be necessary for her to seek an appropriate adviser and to instruct him with sufficient clarity to enable him to understand the problem and to advise her appropriately…Finally, she needs sufficient mental capacity to understand and to make decisions based upon, or otherwise give effect to, such advice as she may receive.”
“ The evidence shows that such superficial understanding as the Claimant demonstrates has marked limitations. He misunderstands things, fixes onto phrases [and takes them out of context] and will assume that they are the summary of a quite different point. There is in all this a marked failure of a balanced appraisal of the totality of the information – as Prof. Weller said, the Claimant cannot see the wood from the trees. Although he could understand [singularly] concepts and issues relating, for example, to a liability discount, the Claimant could not give appropriate weight to each issue in order to reach a balanced view.”
“ ..if, on the balance of probabilities, a plaintiff is going to use private medicine in the future as a matter of choice, the defendant cannot contend that the claim should be disallowed because National Health Service facilities are available. On the other hand, if, on the balance of probabilities, private facilities are not going to be used, for whatever reason, the plaintiff is not entitled to claim for an expense which he is not going to incur.”