Delivery Partner of Choice

OSL Global provides multidisciplinary engineering, signalling,
technical and project delivery support to clients in the UK and internationally.

OSL Global

With experience that spans multiple industry sectors including Transport, Water, Energy, and the Built Environment, OSL offer a full range of services and solutions ranging from the provision of specific services through to full turnkey project delivery solutions. Situated nationwide, OSL pride themselves on being the delivery partner of choice for a large number of organisations across the sectors in which they operate.


Keeping up with cutting edge technology must be balanced with supporting traditional systems. Leading the way, OSL are one of the only companies to support the major Tier 1 manufacturers with the production of the interlocking data designs. Providing not only designers but verifiers and mentors. We are one of the few companies in the country to still offer a full Solid State Interlocking (SSI) capability.


  • Barry Wilson, Senior Asset Engineer: 'I just wanted to say how impressive it has been for me to see first hand the hard work which everybody put in to ensure the BML project commissioned on time. The installation on site is of a high quality and although a couple of issues these are small when the size of the project is seen. The DU team are very pleased. The Network Rail testing management team and the rest of the client organisation are very grateful to you all.'
  • At approximately 6am 18.03.19, Kilkerran Signal box was brought back into use following a 9 day commissioning period involving signalling,telecoms, E&P and civils alterations. The project has now been commissioned, with the team on the ground having to face challenging weather conditions. Thank you for your hard work. Lessons to be learnt are now under review for future projects.
  • Thank you for your assistance with the Bedminster Pretesting and the Stage 1 commissioning. Colas Rail and Network Rail are very pleased with our performance so far on this project.
  • OSL have supported the Tyne and Wear Metro in delivering improvements to their network at St. James’ Park Station. Four new point ends were successfully installed and New Works Tested by OSL’s Installation and Testing Teams and were signed back into service early. Working collaboratively with our client and the Network Operator, the project was successfully delivered - once again reaffirming OSL as the Delivery Partner of Choice.
    Tyne and Wear Metro Network Improvement
  • Thank you to all staff involved with the blockade works for Nexus/TXM, all equipment consisting of 10 signals, 8 train stops, 12 track circuits, 2 treadles and 2 ends of points were re-installed, tested and signed back into use 6 hours ahead of schedule. Nexus are extremely pleased with the standard of the work and the efforts and attitude of our staff, job well done by all involved.
    Nexus TXM
  • OSL have successfully completed Stage 1 & 2 works at the new Intercity Depot in Doncaster. OSL provided Signalling Installation and Testing Staff to commission the first two stages of a project to facilitate the opening of a brand new rail depot in Doncaster that will be used for the new Intercity Trains on the East Coast Mainline. Our client praised the performance of the staff involved and both stages were handed back ahead of programme. OSL are now looking forward to working with our client to complete the project over the summer months.
    Intercity Depot
  • OSL have successfully taken ownership of the Nantwich Signal Box from Network Rail. Stage 1 - transferring the Signal Box to it's new location in Crewe is now complete. OSL are now undertaking Stage 2 - the refurbishment of the complete Signal Box, ready for its preservation and new duties in training the future Signalling Engineers from the Railway Exchange Training Academy (RETA) and Crewe UTC.
    Nantwich Signal Box Reclocation
  • The Gresty Lane Resignalling Scheme was successfully commissioned for Siemens and the Manchester office. The lessons to be learnt from this project going forward will help OSL improve the way in which they deliver schemes in the future, resulting in more efficient working, cost management, resourcing solutions and fatigue management.
    Gresty Lane Resignalling Scheme


OSL strive for health, safety and environmental excellence throughout the business, developing a ‘Just Culture’ approach and environment with high levels of team moral and individual engagement. Demonstrating that every team member is treated fairly and empowered to have an active role in our continued improvement and success.


Good safety is good business. We have an absolute commitment to health & safety.


We believe in delivering on time and on budget a high quality product, which we are proud of.


We have respect for our colleagues, our clients and the environment.


OSL are proud founders and employer partners of Crewe Engineering and Design UTC. Crewe Engineering and Design UTC is the first of its kind in the area and offers rewarding and inspiring education for 14-18 year olds seeking a pathway to employment and further education. The aim of the UTC is to drive growth in the region’s key industries. The UTC is led by a core group of employers including OSL, Bentley, Jacobs, Siemens and Network Rail and Manchester Metropolitan University (MMU).

OSL Global Latest News

  • in HSQE

    HSQE: Eastrington Bug Hotel!

    The ‘Eastrington Bug Hotel’ was built for the F2G project with the intention of joining areas of wildlife habitat, and enhancing an area of waste land, improving the local environment and creating a wildlife corridor where small mammals, rodents, birds and insects can move from area to area in relative safety. A lectern was installed...
  • in Company

    Accredited: Mental Health First Aid

    A big thank you to @MHFAEngland for coming in and conducting their Mental Health First Aid training. We now have accredited MHFA throughout the business. “If we can increase understanding of self care & motivate people to practice it, we can make a massive difference.” Your mental health matters, talk to us. There are plenty...
  • in Company, Industry

    S&C Performance: Collaborative partnership with Network Rail

    OSL is proud to announce our collaborative partnership with Network Rail Western route, in supporting them to drive S&C performance in CP6. Led by our Head of S&C (Neil Denton) OSL will play a leading part in supporting Network Rail to identify and rectify underlying faults in S&C, training and enhance performance across the route....


Railway Exhange, Weston Road
Crewe CW1 6AA

Focal Point, Fleet St,
Swindon SN1 1RQ

Hillington Park, Mossland Rd,
Glasgow G52 4XZ

Mount House, 90 The Mount,
York YO24 1AR