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Gaining development consent for Nationally Significant Infrastructure Projects, London

Event organised by The British Tunnelling Society

06 October 2015
19:00 - 21:00 BST (GMT+1)
Institution of Civil Engineers
One Great George Street
, SW1P 3AA
United Kingdom

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The Tideway tunnel is required to update London's Victorian sewerage network which simply cannot keep up with the demands of 21st century London.

The tunnel will connect to over 20 existing Combined Sewer Overflows and ensure that for all but the largest storms the storm sewage is diverted away from the river for treatment at Beckton Sewage Treatment Works.

Built by Sir Joseph Bazalgette in the 1860s, the Victorian sewers still form the backbone of London's sewerage system today. They are in excellent working condition, but have simply run out of capacity. Built when London's population was two million and designed for four million, they are now struggling to serve a capital city with more than eight million people; a figure that continues to rise.

The Thames Tideway Tunnel Development Consent Order (DCO) was granted by the Government to Thames Water in September 2014 and in September 2015 a new water company – Bazalgette Tunnel Limited - has been created to take the project forward. Construction contracts have also been awarded.


  • Ian Fletcher – Planning Project Manager (Policy)
  • Derek Arnold – West Engineering Manager

For more information please contact:

Greg James