Committee publication · Correspondence · 23 June 2026

Correspondence from Sir Adrian Montague, Chairman, Thames Water regarding due diligence report, dated 9 June 2026

From: Environment, Food and Rural Affairs Committee

Inquiry: Reforming the water sector

Summary

Sir Adrian Montague, Thames Water Chairman, responds to the Environment, Food and Rural Affairs Committee's 3 June request for due diligence materials. Thames Water confirms it will seek releases from report providers to share documents with London & Valley Water before Ofwat's decision announcement. The management retention scheme remains paused.

Key findings

  • Due diligence reports passed to London & Valley Water are subject to confidentiality and professional obligations owed to report providers
  • Thames Water will work with L&VW to obtain necessary releases from report providers between now and Ofwat's decision announcement
  • Thames Water acknowledges the commercially sensitive and national security dimensions of the due diligence materials
  • Management retention scheme remains in paused status

Tone

Procedural

Topics

water-utilitiescorporate-governanceconfidentiality

Key actors

Sir Adrian Montague, Alistair Carmichael, Thames Water Utilities Limited, London & Valley Water, Ofwat

Notable line

… we will work with L&VW between now and Ofwat announcing its decision to seek the necessary releases from the report providers.

Key Quotes

The reports are subject to confidentiality and other obligations owed to the professional providers of the reports.
Sir Adrian Montague · explaining constraints on releasing due diligence materials
In order to release this information we will work with L&VW between now and Ofwat announcing its decision to seek the necessary releases from the report providers.
Sir Adrian Montague · outlining Thames Water's process for sharing confidential information
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Source · parliament.uk record ↗