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Know sooner.
Non-destructive concrete scanning, LiDAR, and NDT surveys — across the UK, results the next working day.
We scan before cutting, coring or drilling to reduce the risk of striking reinforcement, tendons, services or other embedded features.
Every method begins with a non-destructive look. We reduce the risk of strikes and unplanned damage to cables, services and structure.
Engineering-grade detail. Defensible reporting.
Calibrated equipment, qualified surveyors, and reports structured so your structural engineer can review the data quickly.
On site within days. Reports in hours.
We respond to enquiries the same working day. On-slab markings are left before the surveyor leaves site. Your PDF report is issued the next working day.
Six specialist services. One accountable team.
A complete picture of what's in, on, and above your structure — delivered by people who do this and only this.
GPR Concrete Scanning
Ground penetrating radar finds rebar, post-tension cables, conduits, and voids hidden inside concrete — before they become a problem.
Learn moreFerro Scanning
Electromagnetic scanning to map reinforcement, measure cover depth, and estimate bar diameter without touching the concrete.
Learn moreConcrete Testing
On-site non-destructive and intrusive testing methods, including rebound hammer testing, pull-out testing, core extraction, and laboratory compressive strength testing.
Learn moreLiDAR Scanning
Terrestrial and mobile LiDAR for as-built surveys, façade capture, structural monitoring, and BIM-ready point clouds.
Learn moreDrone Surveys
Drone surveys for site progress, photogrammetry, orthomosaics, aerial inspection, and volumetrics. Subject to CAA Operational Authorisation.
Learn moreLarge-Scale GPR
Multi-channel and array GPR for utility mapping, highways, airfields, archaeology, and ground investigation.
Learn moreGPR Concrete Scanning
See inside concrete before you cut, drill, or core.
GPR concrete scanning uses ground penetrating radar to image the inside of a concrete structure non-destructively. We capture data on rebar layout, likely post-tension tendon positions, embedded conduits, voids, and slab thickness so your team can understand what the scan data indicates about embedded features within the scanned area before any work begins.
Read about gpr concrete scanningFerro Scanning
Cover depth, bar spacing and reinforcement layout measured with high-resolution electromagnetic scanning.
Ferro scanning is high-resolution electromagnetic detection of ferrous reinforcement. It complements GPR by giving cover depth and bar spacing readings, with bar diameter estimated where conditions allow on dense or shallow reinforcement.
Read about ferro scanningConcrete Testing
Strength, integrity, durability — measured properly, reported clearly.
Concrete testing covers a family of methods used to assess strength, durability, and integrity in built concrete. We deliver non-destructive and intrusive testing methods, including rebound hammer testing, pull-out testing, core extraction, and laboratory compressive strength testing. Pull-out testing is semi-destructive and core extraction is intrusive.
Read about concrete testingLiDAR Scanning
Capture reality at millimetre accuracy — buildings, façades, structures.
LiDAR scanning produces a high-density 3D point cloud of any space, façade, or structure. We deliver registered, georeferenced point clouds and BIM-ready models from terrestrial and mobile platforms.
Read about lidar scanningDrone Surveys
Every angle, on schedule, without scaffolding.
Drone surveys deliver fast, repeatable aerial capture: site progress, orthomosaic mapping, photogrammetric models, aerial inspection, and volumetric stockpile measurement.
Read about drone surveysLarge-Scale GPR
Map utilities, voids, and ground conditions across whole sites.
Large-scale GPR uses multi-channel arrays to image the subsurface across a whole site in one pass. We deliver utility mapping to PAS 128, highway condition surveys, airfield investigation, archaeological reconnaissance, and ground investigation support.
Read about large-scale gprBuilt for sectors that don't tolerate guesswork.
Commercial Construction
Commercial construction runs on tight programmes and tighter margins. Corvus delivers the scan, test, and survey work that prevents the small misses that turn into big bills.
Residential Development
Whether the project is a single conversion or a 500-unit estate, Corvus delivers the scanning and survey work that keeps residential schemes on programme and out of trouble.
Highways & Infrastructure
Highways and infrastructure work is unforgiving. Possessions are short, services are dense, and the cost of a strike is enormous. Corvus delivers PAS 128 utility mapping and large-scale GPR that gives you a defensible plan before the first sod is turned.
Heritage & Listed Buildings
Heritage projects need answers without damage. Corvus delivers the LiDAR, GPR, and NDT work that lets architects, conservators, and engineers make informed decisions without breaking ground.
Rail
Rail work happens in narrow possession windows on safety-critical assets. Corvus delivers the scanning, surveying, and NDT work that fits inside the window and gives engineering teams the data they need to act.
Utilities
Utility networks rely on accurate subsurface data. Corvus delivers PAS 128 utility detection and large-scale GPR for water, power, gas, telecoms, and district networks.
Nuclear & Defence
Nuclear and defence environments demand vetted personnel, controlled processes, and a deliverable that holds up to audit. Corvus is built for that.
Facilities Management
Facilities teams often need fast answers on small jobs: a wall fixing, a slab penetration, a quick condition check. Corvus is built to respond at that pace without losing rigour.
Structural Engineering Consultancies
Structural engineers don't need a vendor — they need a partner who delivers the data they can defend. Corvus does the scan, test, and survey work that lets your engineers focus on the design, not the dataset.
From phone call to deliverable in four steps.
- 01
Book
Tell us what you need. We come back with a quote, a method, and a date — same working day.
- 02
Survey
Calibrated kit, qualified surveyor, on-slab markings, and a method statement before we leave.
- 03
Process
Data is reviewed in the office, anomalies are checked, and the report is built around the question being asked.
- 04
Deliver
Annotated PDF, CAD-ready DXF/DWG, and a debrief call if the brief needs it.
What our clients say
We had a PT slab with no reliable as-builts and a drilling programme starting Monday. Corvus were on site Friday morning, markings were done before lunch, and the report was in our engineer's inbox the next working day. Exactly what we needed.
The data quality is consistently better than anything we've had from other scanning contractors. Depth-accurate, CAD-ready, and the reports are structured so we can go straight to design without chasing clarifications.
Corvus have become our default call for anything pre-drill or pre-penetration across our managed estate. Fast to respond, clean on site, and the reports hold up when we need to show our structural team exactly what was found and where.
Real surveys. Real sites.
Every job in our library. No stock photography — these are our team, our kit, and the actual sites we've worked on.
Reading from the team.
How to manage subcontractor scanning on a large project
On a multi-phase project, scanning is often subcontracted and easy to de-scope under cost pressure. Here is how principal contractors and engineers should manage it to avoid gaps in coverage.
Read articleGPR, scanning, and the Party Wall Act
Party wall work often requires investigation of the existing structure before any notifiable work begins. Here is where scanning and NDT support the party wall process.
Read articleScanning and NDT for dilapidations and condition surveys
When a landlord or tenant needs defensible evidence of a structure's condition, scanning and NDT provide the objective data that visual inspection cannot. Here is how it is used.
Read articleReady to see what's beneath the surface?
Tell us what you're working on. We'll come back within a working day with a quote, a method, and a date in the diary.