OSL provides rail signalling and multidisciplinary engineering, technical and project delivery support to clients in the UK and internationally. With extensive experience in a broad range of services and solutions, OSL pride themselves on being the delivery partner of choice for a large number of organisations across the sectors in which they operate. Situated nationwide, OSL are now expanding fully into international markets. The industry sectors we are involved with include Transport, Water, Energy and the built Environment. The full set of services and solutions we offer range from the provision of specific services, or expertise under the direction and control of the client, to bespoke project delivery solutions.