Willis Construction Consultancy (WCC) was formed in 2014 as the consultancy arm of SLS Tunnelling Contractors. 

Based in Ireland, it evolved into a full EU-based sister company, providing SLS the flexibility to offer competitive contracts with Euro payment throughout Europe and worldwide.

Major contracts WCC have consulted on include the Corrib gas project for Shell, as well as the Liffey Siphons Rehabilitation Project for Irish Water where we advised on completion of a live sewer connection with a throughput of up to 18,000 l/min through two 3500mm tunnels in the heart of Dublin.