About Us

ARK is a Signalling Design Consultancy set up in 2011 specialising in London Underground (LU) and Network Rail (NR) Signalling Systems. We have a wealth of experience in all aspects of Signalling Design work associated with the LU and NR Signalling Systems.

Our Vision

Our vision is to deliver the highest quality signalling designs on time, every time.

Our Objectives

  • To deliver fully compliant, high quality, signalling designs and deliverables first time every time.
  • To achieve the Clients agreed timescale.
  • To constantly satisfy or exceed the ever changing expectations of the Client.

What We Do

NR Infrastructure ā€“ Our core staff and associates have a wealth of knowledge in the field of NR signalling design. This enables us to offer a complete suite of signalling design services as required to support GRIP Stages 1 through to 8.

LU Infrastructure – Through our many years of experience at the leading edge of signalling projects we are able to offer a complete signalling design service from feasibility and scoping, to the production of Category ā€˜Sā€™ Approved Designs and the provision of all signalling design related documentation to support the successful installation and commissioning for our Clients.


  • BS EN ISO 9001:2008 Quality Management System
  • BS EN ISO 14001:2004 Environmental Management System
  • BS EN OHSAS 180001:2007 Health and Safety Management System
  • RISQS (formerly Achilles Link-Up scheme) Qualifi cation via Audit for 42 Signalling Design Product Codes