Dylan Simon v Manuel Paul Helmot (by his next friends and guardians Rosemary Helmot and Kenneth Raymond Jordan) (Guernsey)

In a Guernsey personal-injury claim where damages must be paid as a lump sum, the court must use the best available evidence to achieve full compensation, neither more nor less. English common law, particularly the ILGS-based approach developed in Wells v Wells [1999] 1 AC 345, is persuasive but must be adjusted for material differences in local conditions.

A statutory discount rate fixed under the Damages Act 1996 has no direct application in Guernsey and may lack evidential value. Different heads of future loss may attract different rates. A negative rate is permissible where inflation is expected to exceed investment return. A suitable index is not essential if compelling expert evidence establishes the necessary adjustment.

The respondent suffered catastrophic injuries in a road accident. Liability was admitted, and the dispute concerned only the quantum of future damages, principally future loss of earnings and care and case-management costs.

The Royal Court awarded damages using a single 1% discount rate. The Court of Appeal of Guernsey allowed the respondent’s appeal, dismissed the appellant’s cross-appeal, and substituted rates of -1.5% for earnings-related losses and 0.5% for other losses. The appeal concerned whether the English statutory rate applied, whether different or negative rates were permissible, and whether expert evidence could establish earnings inflation without a suitable local index.

1. Appeal dismissed. Lord Hope delivered the leading judgment. Lady Hale, Lord Brown, Lord Clarke and Lord Dyson agreed that the appeal should be dismissed.
2. Guernsey law. English common law is a persuasive source where the issue is not governed by Guernsey statute or customary law. Its principles must be adjusted where economic or other conditions in Guernsey differ materially from those in England.
3. Full compensation and valuation. The claimant must receive an award that is neither more nor less than the net loss. Although perfect accuracy in forecasting future loss is impossible, the court must make the best use of available valuation tools. The ILGS-based approach developed in Wells v Wells [1999] 1 AC 345 provided the relevant common-law guidance.
4. Discount rates. The rate fixed by the Lord Chancellor under the Damages Act 1996 had no direct application in Guernsey and, because of its statutory context and the passage of time, had no useful evidential basis. The court was entitled to disregard it. Different discount rates may be used for different heads of loss where the evidence shows that inflation affects them differently. A negative discount rate is legally permissible where inflation is expected to exceed the investment return, because it is in substance an adjustment increasing the multiplier.
5. Evidence. The absence of a suitable index did not prevent an adjustment for earnings inflation. Precision is not required in assessing future loss. The court should accept sufficiently compelling evidence based on convincing historical data, while remaining cautious about speculation. The evidence of the economist and actuary established a persistent gap between earnings and price inflation.
6. Accordingly, the Court of Appeal was right to substitute a rate of 0.5% for non-earnings-related losses and -1.5% for earnings-related losses. Lord Hope and Lord Dyson considered that legislation authorising periodical payment orders in Guernsey would be preferable, although Lord Clarke and Lady Hale left open a possible future common-law development. Those observations were not necessary to the disposition.

1. Privy Council: Appeal dismissed.
2. Court of Appeal of Guernsey: On 14 September 2010, the respondent’s appeal was allowed and the appellant’s cross-appeal dismissed. The single 1% rate was replaced by rates of -1.5% for earnings-related losses and 0.5% for other losses.
3. Royal Court of Guernsey: On 14 January 2010, damages of £9,337,852.27 were awarded using a single 1% discount rate.