SOPHIE AARON THE TRUSTEES OF THE SLOANE STANLEY ESTATE v THE WELLCOME TRUST LIMITED (1) ADRIAN HOWARD MUNDY (2) ARNAUD LAGESSE
Decision date: 6 November 2015
Neutral citation: [2015] UKUT 586 (LC)
Overall AI summary confidence: high
Short overview
This short overview is intended to summarise the case, issues and outcome so far as they are supported by the judgment.
AI confidence in this short overview: high
This appeal concerned whether tenants could call Dr Philippe Bracke as an additional expert to explain the statistical methodology underlying their leasehold relativity evidence after landlords' experts challenged that methodology. The Tribunal granted permission subject to strict conditions limiting scope, requiring a compliant report adopting specified parts of the primary valuer's report, and tightly restricting other oral expert evidence to avoid duplication and disproportionate costs. The decision also required joint statements of agreed and disputed matters and transferred responsibility for adopted components from the primary valuer to Dr Bracke.
Ratio decidendi
This summary is intended to identify the ratio decidendi, meaning the legal reasons for deciding and the binding part of the decision.
AI confidence in this ratio decidendi summary: medium
Where a primary expert lacks the necessary specialist technical qualifications, a tribunal may permit an additional specialist expert to explain essential technical methodology critical to a fair determination; such admission may be conditioned to require the specialist to state precisely which parts of the primary expert's work it adopts, to address specific criticisms, and to be subject to procedural limits (deadlines, joint statements, and restrictions on oral evidence) to prevent duplication and control costs.
Obiter dicta
This summary is intended to identify obiter dicta, meaning observations made by the way that were not necessary to deciding the case and are not binding.
AI confidence in this obiter dicta summary: medium
The Tribunal remarked on the wider significance of methodological rulings for multiple pending cases and on the relevance of procedural parity — if one party calls a technical analyst to support an appendix, the other should have a comparable opportunity — as factors weighing in favour of permitting focused technical evidence.