Professor Carolyn Roberts -v- Severn Trent Water Limited and others
Neutral Citation Number: [2026] EWCA Civ 222
Case No: CA-2025-001337
In the Court of Appeal (Civil Division)
on appeal from the Competition Tribunal
Mr Justice Roth, Ian Forrester KC and Professor Alasdair Smith
[2025] CAT 17
5 March 2026
Before:
Sir Geoffrey Vos, Master of the Rolls
Lady Justice Falk
Lord Justice Zacaroli
Between:
PROFESSOR CAROLYN ROBERTS
(Proposed Class Representative/Appellant)
and
(1) SEVERN TRENT WATER LIMITED & SEVERN TRENT PLC
(2) UNITED UTILITIES WATER LIMITED & UNITED UTILITIES GROUP PLC
(3) YORKSHIRE WATER SERVICES LIMITED & KELDA HOLDINGS LIMITED
(4) NORTHUMBRIAN WATER LIMITED & NORTHUMBRIAN WATER GROUP LIMITED
(5) ANGLIAN WATER SERVICES LIMITED & ANGLIAN WATER GROUP LIMITED
(6) THAMES WATER UTILITIES LIMITED & KEMBLE WATER HOLDINGS LIMITED
(Proposed Defendants/Respondents)
and
THE WATER SERVICES REGULATORY AUTHORITY (OFWAT)
(Intervener)