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Type
Lecture

National Grid Grain to Tilbury tunnel and vertical shaft sinking machine

Event organised by The British Tunnelling Society

Date
17 September 2026
Time
18:00 - 19:30 BST
Location
The Institution of Civil Engineers
One Great George Street
Westminster
London, SW1P 3AA
United Kingdom

This event has now ended

Overview

National Grid's Grain to Tilbury project forms part of the Great Grid Upgrade, delivering a new 2.2 km, 400 kV cable tunnel beneath the Thames between Tilbury and Gravesend. It replaces the 1960s Thames Cable Tunnel and reinforces electricity transmission between Kent and Essex.

Following the construction of the shafts using Europe’s largest vertical shaft sinking machine (VSM), the ~4.7m diameter Herrenkencht MixShield tunnel boring machine recently reached the half-way mark of its tunnel drive in chalk. 

Delivered by representatives from the National Grid and Ferrovial BEMO Joint Venture (FB JV), this event provides an overview of the scheme, its construction, and associated challenges and solutions.

Following the lecture, there will be a networking session in the ICE Kendal's bar.

Organiser

British Tunnelling Society

British Tunnelling Society

The BTS is a dynamic group of tunnelling professionals sharing knowledge within the industry.

Programme

17:30 - 18:00

Registration & refreshments

18:00 - 19:30

Presentations

19:30 onwards

Post-meeting networking and refreshments