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We are the biggest agency supplier of Signal Works Testers in the UK and we have over 200 Signal Works testers Certificate of Competence on the Network Rail database.


We can supply testing resource throughout the UK for long term or short term requirements on a fixed rate framework agreement without any hidden travel or accommodation costs.


We are RISQS approved for Test & Commissioning and have a framework agreement with Network Rail to provide a test and installation resource or complete fixed price packages of work.


MPI Limited has delivered over £10 million worth of Signal Works Testing Fixed Price Packages of Work. A number of the projects we have won under competitive tender and have made large savings to our clients.


A stringent process is in place to ensure only the most competent, experienced and trained personnel can progress.


As well as supplying London Underground with signal works testers we have also supplied testers to Metro projects in Sweden, Norway,
Taiwan and Malaysia.


We have a robust system to develop our signal works testers through training, mentoring and planned work experience. We have worked with
rail clients to deliver a trainee tester programme.