Signalling Design & Consultancy

We provide end to end signalling design and control & information solutions to a range of clients in the metro and main line environments.

Our capabilities and experience allow us to deliver complex signalling design and control & information projects from conception right through the project lifecycle, culminating in commissioning and handover. Our highly-skilled team works collaboratively to ensure projects are delivered seamlessly, both to programme and to budget.

In addition, we offer a whole host of consultancy services based around the disciplines of project engineering, project management, engineering management and signalling assurance.

Get in touch

Transport for London Capabilities

We are able to provide the full suite of signalling design services from requirements definition and capture, scheme design, concept design statements, detailed design in accordance with the Category ā€˜Sā€™ process, records updates to support commissionings and, finally, handover to Maintenance.

We have numerous resources who are competent and licensed to undertake signalling design production, checking and final approval.

In addition, we are able to provide signalling assurance for both legacy signalling and Communication Based Train Control systems.

Network Rail Capabilities

We have significant experience and capability in the GRIP process to undertake Option Selection, Single Option Development, Detailed Design, Construction Test & Commission, Scheme Handback and Project Close Out for our Clients.

Our highly talented team are IRSE licensed to Designer, Principles and Verifier levels.

In addition, we are able to provide Contractors Responsible Engineers (CRE) and Contractors Engineering Manager (CEM) to support our projects when required.

Our Values in Action


Ark’s focus has always been upon the delivery of a ‘right first time’ product.

We add value to the whole spectrum of signalling design, from high-volume, low-complexity Functional Equivalent Designs to highly-complex, bespoke solutions.


We pride ourselves on providing solutions to complex engineering challenges, translating those into success stories for our clients.

This was demonstrated during the Edgware Road Re-Signalling Project where requirements initially seemed unachievable. Through the application of technical expertise and experience, Ark delivered a fully-compliant signalling scheme and detailed design by combining signalling technologies with the innovative application of fresh ideas.


Our team values and promotes Equality, Diversity and Inclusivity in both internal and external interactions.

Whether you’re a client, a strategic partner or a member of our team, whenever you come into contact with Ark, you’ll be treated with the respect and dignity you deserve.


Our collaborative approach enabled our Delivery Manager and team of Signal Designers, Control and Information Engineers, and Software Developers to integrate seamlessly with our Client’s team to facilitate the design and implementation of a new control system on the Piccadilly Line.

Get in touch

To learn more about our signalling design services or to discuss a specific project, please complete this form. A member of our team will be in touch.