Kent factory completes final segment for HS2’s London tunnel

The final tunnel lining ring for HS2’s Northolt Tunnel West tunnel running under west London has been cast at its factory on the Isle of Grain ahead of being delivered to London.
HS2 tunnel segment casting complete at PACADAR UK Isle of Grain factory (c) HS2
The company began working on the segments in April 2022 and has completed the production of 59,129 segments, which make up 8,447 tunnel rings—seven segments per ring. Each segment weighs 7 tonnes on average, and the Kent-based fa