WJ is a specialist contractor with 40+ years’ experience providing dewatering, depressurisation, well drilling, water management, instrumentation and monitoring services to a wide range of customers. WJ have been involved in some of the largest and technically challenging tunnelling projects in the UK (Crossrail, Tideway and HS2) and overseas (Eglinton LRT, Canada and Bujeon to Masan HS tunnel, S. Korea)”


