Ensuring health, safety and well-being on the UK’s Thames Tideway tunnel programme

Due for completion in 2025, the £4.2 billion Thames Tideway tunnel programme is one of the largest and most complex civil engineering schemes in the world. This paper reports on how the delivery team ensured the health, safety and well-being of over 4000 people who worked on the programme during the first 6 years of its 9 year delivery. The team collaborated to create a strong safety culture, focusing on excellence in getting the basics right, sharing and adopting best practice, and learning from near misses and incidents. The result has been a very good level of safety performance.