D2 provides Engineering and Design support for project delivery. We deliver the highest possible value to our clients when executing complex infrastructure engineering projects.

Outcome-Focused Approach to Project Delivery

D2’s Engineering and Design capability is dedicated to solving problems and enhancing infrastructure for our clients, supply chain, and stakeholders. Our primary focus is on minimizing carbon footprint, maximizing the use of Low Carbon materials, and adopting innovative construction methods to ensure project success. We specialize in offering client-based Engineering Management, Systems Engineering, and Carbon & Sustainability services, covering the full project lifecycle for major complex infrastructure projects, from concept to handover.

At D2, our Engineering and Design team collaborates closely with clients to understand their needs and develop their requirements. D2 offer design solutions that align with the clients requirements. We continuously improve our processes throughout the project lifecycle and look to apply Modern Methods of Construction (MMC) to inform early design decisions.

Our expertise lies in providing Engineering and Design services to client-based organizations such as Network Rail. Where our team apply the  GRIP/PACE/RIBA processes for design and engineering assurance.

By adhering to the GRIP/PACE/RIBA process throughout each project’s lifecycle, D2 follows the Network Rail SPEED principles, ensuring an outcome-focused approach.

Engineering and Design consultancy services

Systems Engineers

Systems Engineering and integration management.

  • CSM
  • TSI
  • Operations requirements
  • Signal Sighting
  • V&V Requirements

Engineering Managers

Rail Assurance roles:

  •  Client side DPE / PE
  • Contractor CEM-D /CRE
  • Management of integrated Engineering Design
  • Pre – Feasibility study & option selection reports.
  • Technical expert- Multi discipline design & project delivery.

Carbon & Sustainability

  • Whole project life-cycle Sustainability & Carbon Analysis and Reporting
  • Whole life Carbon Advisory
  • Net-Zero Strategy Development
  • Renewable Energy Integration
  • Green Building Consultation
  • Supply Chain Sustainability
  • Policy and Compliance Assistance
  • Energy Efficiency Audits
  • Stakeholder Communication and Reporting

Get in touch with our Engineering experts

OUR Engineering PROJECTS



Project Controls and Data Science

Planning, Scheduling and Constructability

Capacity Planning

Information Management

Utilities Management


Project Management

Digital Technology

Risk & Value Management