Contract – Warranty-Breach. The appeal arose from the fact that foundation structure of two offshore wind farms, designed and installed by the respondent, MTH, failed shortly after completion of the construction and installation. The Supreme Court, in allowing the appellant E.ON's appeal, held that the technical requirements of the project, which ensured a lifetime of 20 years, either provided a warranty that the foundations would actually have a lifetime of 20 years, or an undertaking to provide a design that could objectively be expected to have a lifetime of 20 years. Accordingly, the first instance decision was reinstated with MTH being held liable for the remedial costs of €26.25m.