Balfour Beatty Vinci
Balfour Beatty Vinci is a global leader in delivering critical infrastructure, with a long history of working together on projects such as the Channel Tunnel and HS2.
- Date
- 19 February 2026
- Time
This event has now ended
Overview
This BTSYM lecture will explore compressed air (hyperbaric) works undertaken on HS2 5.7 km twin-bore Bromford Tunnels constructed using 8.62m diameter variable density tunnel boring machines (TBMs).
The presentation will focus on the key challenges, safety considerations and lessons learned from working in pressurised environments.
Please register in advance to help us manage numbers and ensure we have everything prepared for you on the night.
Following the lecture, there will be a networking session in the ICE Kendal's bar with drinks sponsored by Balfour Beatty Vinci.
Organised by
British Tunnelling Society
The BTS is a dynamic group of tunnelling professionals sharing knowledge within the industry.
Speakers
Josh Knight
Balfour Beatty VINCI
tunnel agent
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Josh Knight
Josh is the tunnel agent for Balfour Beatty VINCI working on the HS2 Bromford Tunnels. He managed the completion of the TBM tunnel drive which broke through in May 2025, and is now managing the Cross Passage works. Prior to HS2 Lots N1 & N2, he worked on Tideway East and Hinkley Point C.
Emrah Simdi
Balfour Beatty VINCI
engineering manager
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Emrah Simdi
Emrah is the engineering manager at Balfour Beatty VINCI, leading engineering delivery team for the HS2 Bromford and Long Itchington Wood tunnels. He has 20 years’ experience delivering major tunnelling and underground infrastructure projects across the UK, Turkey, and the Middle East
Sustainable Development Goals:
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