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Rail Engineering

MECX has an extensive background of work in the rail engineering sector; we have the specialism in a range of technical activities which complement our general civil engineering offering. We work on various asset types undertaking maintenance, renewals and enhancement of the mainline network, as well as working on underground railways, light rail and tramways.

In line with our core offering, three core activities the combine to make up our rail engineering service:

  • Infrastructure projects – enhancing the rail infrastructure through the construction of new assets.
  • Asset management – maintenance and renewal of existing rail infrastructure assets, as well as facilities management of buildings in lineside and high street environments.
  • Support Services – the provision of temporary labour and contract staff to support the clients and works that we undertake delivering projects and maintaining assets, plus additional specific services such as the provision of OHLE and DC 3rd rail isolations and training.

To provide a relevant framework to govern our works delivery, MECX holds a Network Rail Principal Contractor’s Licence and all applicable RISQS codes to cover our activities.

Regarding the types of asset portfolios on which we work, they are electrification, signalling and track.


MECX has considerable delivery experience in railway electrification on both mainline and light rail infrastructure, covering both OHLE and DC conductor rail systems. Additionally, we have expertise in traction, both HV-AC and DC distribution systems.

MECX can manage all phases and aspects of railway electrification projects from development, design and implementation through to testing, commissioning and final hand back into service. Services offered by our electrification division include:

  • Wiring
  • Earthing & Bonding
  • Switching
  • Substations and Switching Stations
  • HV and DC cabling
  • Main and Small Part Steelwork
  • Foundations
  • Structures

We offer a full design and build services, including independent design checks, and bonding design and installation, plus heights and stagger survey analysis and adjustments, and installation, testing and commissioning.


We are a niche provider of signal construction, installation, testing and maintenance works and services to the mainline rail network. We have experience of working on mechanical and multiple aspects signalling systems, as well as in-cab systems, such as ETCS. Our works focus on the mechanical and electrical systems which control the movement of trains on and around the rail infrastructure and at intersections with the rail infrastructure.

MECX offers a full range of services to asset owner and operators, examples of which are:

  • Location Rewires/Renewals
  • Signal Renewals (electrical and mechanical)
  • Intelligent Infrastructure Installations
  • Data logger renewal
  • Point Machines, including Stretcher Bar and Back Drive Renewals
  • Battery and UPS replacement
  • AWS and TPWS Renewals
  • Treadle Renewals
  • Signal Box Panel Renewal
  • Solid State Interlocking
  • Level Crossing Installations
  • Staff Protection Systems
  • Train Describers
  • Signalling Control Systems
  • Mechanical Signalling & Interlocking
  • Push Button and Panel Renewals

Additionally, the company works with principal contractors on the delivery of either signal renewal or construction on new schemes. We provide civil engineering works and services to assist in signalling enhancement schemes; we also offer installation teams, and other safety-critical staff, during the construction phase. Furthermore, we provide snagging services post-installation, to assist the principal signalling contractor complete the con

All our workers are qualified to requisite IRSE standards and are continually assessed to maintain their technical competency and ensure best practice.

We are a multi-disciplinary track renewal and maintenance service provider that delivers major permanent way projects.

At MECX we carry out plain line track, switches and crossings, track drainage and level crossing works, from design through to delivery. We also offer re-sleepering/re-timbering, re-railing, component overhaul, tolerance and adjustment/correction, ballasting and management of operating mechanisms and switches.

Our specialist teams have successfully delivered projects for a vast range of clients, each with different site-specific requirements, complexities, timescales and standards.

Supplies and services associated with P-Way structures consisting of rails, fasteners, sleepers, ballast and underlying foundations:

  • Plain Line track, including sleepers
  • Switches and Crossings
  • Points
  • Track drainage
  • Vegetation Management

We also provide a full range of Vegetation Management Services across the entire UK Rail Infrastructure.  The company’s vegetation squads include fully qualified chainsaw operatives, climbers, RRV operatives, rope access technicians, possession planners & designers who are all able to provide a comprehensive & Network Rail compliant service.

RoSPA Member
MECX network rail contractor
NPTC logo
iso 14001
RISQS 5 star
iso 9001