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 – 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.Read more


  • BBS EN ISO 9001:2015 Quality Management System
  • BS EN ISO 14001:2015 Environmental Management System
  • BS EN OHSAS 180001:2007 Health and Safety Management System
  • RISQS (formerly Achilles Link-Up scheme) Qualification via Audit for 41 Signalling Design Product Codes