The Thames Tideway Tunnel is a large infrastructure project by Thames Water. It is intended to improve the capacity of London’s sewerage system and reduce the number sewage overflows into the River Thames. The largest component is a tunnel underneath the Thames, running from west to east London. It is the biggest scheme delivered by a sewerage company since privatisation.
Our role in the project is to:
- ensure the cost of the ‘Thames Tideway’ scheme is no more than it has to be and that Thames Water’s customers receive the best value for money possible
- use lessons learned from this to develop future regulation and financing approaches for largescale infrastructure projects
We will feed into the consultations and decisions by the UK Government, Thames Water and others.
On 4 June 2014, the Thames Tideway Tunnel was specified under the Water Industry (Specified Infrastructure Projects) (English Undertakers) Regulations 2013 following a consultation by Defra in December 2013. The specification requires Thames Water to competitively tender for an Infrastructure Provider to finance and deliver the bulk of the Thames Tideway Tunnel.
IN 15/11: Project licence and regulatory guidance for the Thames Tideway Tunnel infrastructure provider24/Aug/2015 (PDF - 121 KBytes)
Notice issued under regulation 6(8) of the SIP Regulations dis-applying to a limited extent Bazalgette Tunnel Limited’s obligation to apply the procurement provisions set out in the SIP Regulations21/Aug/2015 (PDF - 2 MBytes)
Thames Tideway Tunnel – explanatory note as to Ofwat’s and the Environment Agency’s likely approach to enforcement19/Aug/2015 (PDF - 229 KBytes)
Ofwat guidance on approach to the economic regulation of the Infrastructure Provider for the Thames Tideway Tunnel19/Aug/2015 (PDF - 334 KBytes)
Bazalgette Tunnel Limited designated as infrastructure provider for the Thames Tideway Tunnel project13/Aug/2015 (HTML - 2 KBytes)
Reasons for designating Bazalgette Tunnel Limited as an infrastructure provider responsible for delivering the Thames Tideway Tunnel13/Aug/2015 (PDF - 118 KBytes)
Appendix B: Draft of the project licence, showing all changes made since the consultation held in October 201417/Jul/2015 (PDF - 4 MBytes)
Appendix A: Summary of responses to our consultation on the regulatory framework for the infrastructure provider (IP) that will deliver the Thames Tideway Tunnel (TTT) Project17/Jul/2015 (PDF - 185 KBytes)
Consultation on award of a project licence and issue of a waiver notice to the infrastructure provider
In October 2014 we consulted on draft regulatory documents that set out how we intend to regulate the third party, known as the infrastructure provider (IP), appointed to deliver the Thames Tideway Tunnel Project. Thames Water announced the preferred bidder for the IP procurement on 14 July 2015. The purpose of this consultation is to seek comments before granting a project licence and issuing a waiver notice to the preferred bidder.17/Jul/2015 (PDF - 236 KBytes)