Story Contracting was the best performing of all Network Rail’s construction contractors across 2017/18, Construction News can reveal.
The Carlisle-based contractor scored the highest average PRISM score across Network Rail’s 15 reporting periods up until the end of 24 February 2018 (see table below).
The PRISM score is a measure used by Network Rail to monitor the delivery performance of its contractors.
Companies are scored between one and five on a number of different performance criteria, including delivery on time, engineering assurance, health and safety, contract administration and behaviour.
Network Rail scores companies every four weeks of their contracts.
In data obtained by CN through a freedom of information request, Story Contracting came out as the top-performing railway contractor having scored an average PRISM score of 4.91 across the 15 periods.
SSE Contracting, the energy giant’s M&E arm, came in second with a score of 4.68 over the year, with St Albans-based rail specialist Giffen Group third after scoring 4.67.
Of the UK’s 30 biggest contractors by turnover, Skanska was the highest performing with a score of 4.57, followed by Bam Nuttall on 4.48 and Balfour Beatty Civil Engineering with 4.34.
The PRISM score was brought in by Network Rail in 2011 so it could better monitor the performance of companies working in its supply chain.
Only Network Rail’s principal contractors receive PRISM scores. Firms must be working on a contract that is three months or longer and has a value greater than £50,000.
Network Rail’s contractors are assessed every four weeks during project update meetings with the client. The review goes both ways, with contractors also scoring Network Rail on its performance.
The lowest-performing contractor across Network Rail’s principal contractors was Morgan Sindall, which scored an average of 2.47 across the period.
Carillion scored an average of 4.15 before it collapsed, while the company which has now taken on the majority of Carillion’s rail contracts, Amey, scored 4.31.
Network Rail contractor PRISM scores to 24 Feb 2018
|Company||Average PRISM score|
|Global Rail Construction||4.39|
|Balfour Beatty Civil Engineering||4.34|
|Balfour Beatty Rail||4.32|
|Amey / Inabensa JV||4.14|
|Dyer & Butler||3.8|
|Signalling Solutions (Balfour / Alstom)||3.72|
|Cairn Cross Civil Eng||3.61|
|Colas Rail Morgan Sindall JV||3.51|
|John Graham Holdings||3.29|