Circet – Rail and Transportation

Our Rail & Transportation arm (Formally KN Network Services) have operated across the Rail Network Nationally since 2005. As Principal Licenses holders for both TfL London Underground and Network Rail, we provide duties as Principal Designer and Principal Contractor for packages, and frameworks valued up to £60m for the UK business, across all our disciplines. Our vast experience across disciplines enables full turnkey stakeholder management.

We are collaborative at understanding the needs and requirements of working on the operational railway and construction Projects, and have a safety-first culture embedded within the business ethos. This is underpinned throughout the Group with support from our Training Academies


For all enquiries please email UKtransportinfrastructure(at)


Experienced in delivering Projects on Rail across UK and Ireland Infrastructure. With over 200 directly employed personnel dual trained including project management, construction management, HSQE, surveying, engineering, installation and safety critical resource supporting our clients.

TFL London Underground Principal Contractor

  •   4LM Signalling Upgrade
  •   PLU Signalling Upgrade

Network Rail Principal Contractor

  •   Civils Framework

Rail Accreditations

  •   ISO9001
  •   ISO14001
  •   ISO27001
  •   ISO45001
  •   ISO50001

Our Services

Railway Telecoms

Rail Signalling

Railway Station Upgrades

EV Charging Points

RISQS audited - CIRAS - Constructionline Platinum - Considerate Contractor - FORS Silver - FIRAS