The PRISM league table is based on performance of 39 key suppliers and contractors to the rail industry and in the latest published update includes for the first time a benchmark score for Network Rail.
Network Rail came out ranked 21st on the scoreboard of major suppliers in a performance period spanning the new year.
Scores are given for project delivery, safety performance and company culture. The firms also supply spending data from their own supply chains.
Performance scores range from 0-5 where 5 is deemed very good and 3 adequate to give the overall company rating.
This time round Story Rail heads up the top five performers followed by B&M McHugh, Mott MacDonald, Osborne and Jacobs Engineering.