Contract C821





2012 - Current

Following a rigorous tender process in 2012, Warner Surveys was awarded the prestigious C821 contract as Geomatic Surveying Consultant to Crossrail.

High Quality & Value For Money Submission

Up against a number of equally high profile surveying companies Warner Surveys’ high quality, value for money submission combined with our previous experience  working on various Crossrail contracts, including our complete re-survey of the Crossrail control point network undertaken earlier that year, won the day.

“Wriggle” Surveys

WS are required to carry out a wide range of  surveying disciplines from maintaining and expanding the Crossrail control point network, and checking of contractors movement monitoring regimes to “wriggle” surveys of the new tunnels.

High Profile Infrastructure Project

WS have mobilised a high quality resource to provide an important Quality Assurance role on this, the UK’s most high profile and important, transport infrastructure project.

Further Activities Included:

  • Installation and surveying of primary control network by GNSS, total stations and precise levelling methods
  • Topographic surveys prior to site works commencing
  • Checking of sub-contractors monitoring networks
  • Laser scanning of the whole of Whitechapel LUL and Overground station and streetscape around the station
  • Production of a 3D CAD model of the whole of Whitechapel LUL and Overground station and streetscape around the station
  • Laser scanning of a number of the newly constructed station boxes and provision of various deliverables such as deformation mapping, 3D models, cross sections etc
  • Laser scanning of tunnels and provision of alignments and cross sections
  • Installation of monitoring regimes and monitoring readings at various locations in the new tunnels
  • Surveying newly installed track geometry and tunnel clearance using the Amberg GRP1000 and GRP5000

Click Here to see Crossrail Testimonial Letter


Contact Operations Director Clif Webb HERE or call +44 (0)203 651 7549 to discuss how we can assist your project.

  • Crossrail Route

  • 3D CAD Model of Station

  • Piling Rig

  • 3D Laser Scan of Track Merging to Linework