Utility crossings faced significant constraints: inadequate duct capacity at the River Colne bridge and high-risk congestion near the River Pinn due to existing high-voltage and telecoms infrastructure. Additional environmental and health risks included flooding, Weil’s disease, and potential impacts on habitats such as bats.

• JSM planned, managed, and coordinated all phases of this multi-million project, including detailed design, permitting, construction, commissioning, and handover.
• The team installed three 66kV circuits to SSE and IDNO standards across Uxbridge and West Drayton, navigating congested roads and utilities.
• The Special Engineering Difficulties (SEDs) included two specialist river crossings under environmental permits while minimising disruption through proactive stakeholder engagement. Achieved by creating a temporary dam and installing a flume pipe to divert the water and enable open-cut works.