The case came down to the question of whether, in the context of claims alleging negligence on the part of valuers, the focus of the Court's enquiry should be on the result or conclusion of the impugned valuation rather than on the process by which the valuer arrived at his valuation, which raised the question of the extent to which it is necessary to consider whether the valuer’s actions fell below the requisite standard of skill and care applying the Bolam test. The Court asked: Is it necessary for a valuer to be shown to have acted below the standards of his profession in some way before liability can be found? and answered in the affirmative.
In confirming that (a) a determination that the valuation fell outside of the relevant bracket and (b) the valuer's conduct fell below the requisite standard in the valuation are both necessary elements, the Court sought to explain differences of approach in prior cases by reference to the facts of those cases. The Court explained that different analytical approaches may have been adopted in those cases depending on whether the defendant effectively said, "I may have been negligent but it does not matter because the valuation was within the appropriate bracket", as compared to a defendant who said "whatever the appropriate bracket is, I have not acted negligently".
The Court accepted that the proper legal enquiry was that set out by Dove J in Barclays Bank Plc v TBS & V Ltd [2016] EWHC 2948 (QB) at [64], in summary:
1. The court must form its own view, based on the evidence and its own evaluation, of the correct value as at the valuation date;
2. The court must then consider by reference to the facts of the case what the appropriate margin of error should be, in order to determine the bracket within which a non-negligent valuation would have fallen. The margin of error will usually be plus or minus 10%, but if there are exceptional features of the property in question, the margin of error could be plus or minus 15%, or even higher in an appropriate case;
3. If the impugned valuation is within the relevant margin of error of the court's valuation, then it is within the bracket of potential non-negligent valuations and negligence would not have been established;
4. If the valuation is beyond the margin of error in relation to the court's valuation and therefore outside the bracket, then the valuer's competence and the care used in his or her valuation is called into question. The court will examine at this stage the question of whether in reaching a valuation outside the bracket the valuer has acted "in accordance with practices which are regarded as acceptable by a respectable body of opinion in his profession", i.e. the Bolam test.
The Court also explained that whilst in many instances the court may adopt an analytical framework that follows the four stages set down in Barclays Bank (above), in some cases the court may take an alternative approach, under which it adopts a more analytical approach to the determination of the margin of error that applies to the "correct" valuation. Under this approach the court will consider the valuation process adopted by the valuer, by reference to the scope of reasonable professional opinion as applied to each of the steps involved in the valuation process. The court would only find the valuer to have acted negligently if one or more of the steps taken as part of the valuation process fell outside the envelope of what was regarded as acceptable by a respectable body of opinion within the profession and the margin of error around the "correct" valuation would be considered and set accordingly. In instances where the court utilises this "alternative approach", it is not necessary to then go on to the fourth stage of analysis on the Barclays Bank approach because Bolam considerations would already have been taken into account in the determination of the margin of error.
The Court adopted the Barclays Bank approach on the basis that it was better suited to the facts of this case, finding:
1. The Court preferred the expert evidence put forward by the Defendant's expert and found that the "correct" value of the site at the valuation date was £4.7 million (as compared to the Defendant's £4.1 million).
2. The appropriate margin was between plus or minus 10-15%, which reflected certain unique characteristics of the development plot and the wide range of valuation opinions and questions of judgment required in this valuation exercise.
3. The impugned valuation fell within approximately 14% of the Court's own valuation, i.e. within the bracket of potential non-negligent valuations such that negligence was not established.
4. Nevertheless, the Court found that the Defendant had failed to make provision for the recovery through the purchase price of the cost of enhancements and that the admitted double-counting error further demonstrated a failure to have "got to grips" with the question of enhancements. The Court stated that had the valuation fallen outside of the appropriate bracket, the correct measure of damages for the negligent conduct identified in relation to enhancements would have been approximately £500,000.