Mott MacDonald’s origins are rooted in tunnelling, dating back to our founders’ involvement in the development of London’s underground road and rail systems more than 100 years ago – an association which still continues today – and a testimony to the quality of our work.

From the smallest to the largest, most complex projects, all tunnels have their challenges. Mott MacDonald has always met these by combining knowledge of the ground with design and construction technologies suited to the job. Following these simple guidelines, we have delivered some of the most challenging tunnelling projects ever undertaken.

City and South London railway extension – designed by Mott MacDonald founders
Proud of our participation on award-winning ventures around the world, our renowned skills cover all types of tunnels – bored, segmentally lined, cut-and-cover, immersed tube and sequential excavation method – in every kind of ground from the hardest rock to the softest clay.

From the busiest urban centres to the most pristine rural environments, we understand the blend of complex factors required for a successful underground project. With the fusion of technical excellence, commitment to making projects work and a successful track record, we’re able to deliver innovative and cost-effective solutions to meet our customers’ needs.

Mott MacDonald was principal design consultant for all civil and geotechnical engineering on the UK section of the Channel Tunnel