NDTScan has completed concrete scanning, ultrasonic testing and compressive strength surveys at sites across England, Wales and Scotland. Our base in Oxfordshire means we reach most Thames Valley and South East locations within hours, and our work takes us nationwide. The areas below are the ones we serve most often. If your location is not listed, contact us directly.
Buckinghamshire
Every town and village of 1,000 people or more has its own page, from Milton Keynes to the Chilterns.
All Buckinghamshire towns High Wycombe Marlow Milton Keynes Aylesbury Amersham Beaconsfield
Berkshire
The M4 corridor and the Thames towns, where post-tensioned 1980s and 1990s office floors keep pre-drill scanning in constant demand.
All Berkshire towns Reading Slough Maidenhead Bracknell Windsor Newbury Wokingham
Oxfordshire
Home ground. University, hospital and science campus estates, market towns and the fastest growing new housing in the region.
All Oxfordshire towns Oxford Henley-on-Thames Banbury Bicester Abingdon Didcot Witney
London
Basement construction surveys, post-tensioned slab scanning in office cores and reinforcement mapping for structural openings across Greater London.
The Midlands
Regular attendance in Birmingham, Coventry, Wolverhampton, Leicester, Nottingham and Derby: NHS estates, heritage alterations and RAAC identification on local authority housing.
South Coast and South West
Marine infrastructure at Southampton docks, university buildings in Portsmouth, historic concrete in Bristol, infrastructure renewal in Exeter and Plymouth.
East of England and Cambridge
University estate and science park work in Cambridge, including pre-drill scanning in Grade II listed buildings, plus industrial pre-anchor surveys in Peterborough.
The North, Scotland and Wales
Nationwide attendance for structural condition surveys, RAAC identification and compressive strength assessment where a named specialist is required.
Recent Work by Region
Thames Valley and Home Counties
Pre-drill GPR across the office stock
The greatest concentration of our work sits across Berkshire, Buckinghamshire, Oxfordshire and Hertfordshire. We carry out a high volume of pre-drill GPR surveys on commercial office refurbishments in Reading, Slough, Maidenhead and Bracknell, where post-tensioned concrete floors are common in 1980s and 1990s stock. In High Wycombe we have completed rebar mapping surveys on multi-storey car parks undergoing structural assessments prior to cladding replacement. At sites in Aylesbury, Thame and Amersham we attend residential developments where slab reinforcement surveys are required ahead of core drilling. In Henley-on-Thames and Marlow we have completed pre-drill scanning at riverside commercial properties where slab documentation was unavailable.
Slough and the M4 corridor
GPR concrete scanning at business parks
The dense concentration of commercial floorspace along the M4 corridor generates consistent demand for pre-drill scanning. We have completed surveys at business parks in Slough, Langley and Cippenham using GSSI SIR 4000 and Mala GPR systems, producing AutoCAD-compatible rebar maps for structural engineers and fit-out contractors.
Buckinghamshire
Ultrasonic pulse velocity testing
We have used the Proceq Pundit PL-200 to carry out ultrasonic pulse velocity testing at several sites across Buckinghamshire, including a pre-war reinforced concrete water tower in Princes Risborough and a 1960s school building in Milton Keynes where compressive strength estimation was required as part of a structural condition survey.
Westminster
GPR scanning and post-tensioned cable detection
We completed a GPR concrete scanning survey at a Grosvenor residential property in Westminster ahead of a basement lowering programme. The survey required identification of post-tensioned cables in existing ground floor slabs and mapping of service penetrations to inform the demolition sequence. Results were delivered the same day.
Southwark
Compressive strength testing
At a mixed-use development in Southwark, we completed a combined rebound hammer and SONREB compressive strength assessment on existing reinforced concrete columns, tested to BS EN 13791. The survey provided the structural engineer with confidence in the existing frame capacity ahead of a two-storey extension.
Birmingham and Coventry
RAAC identification surveys
We have completed RAAC identification surveys at a number of sites in Birmingham and Coventry using GPR to distinguish RAAC planks from standard reinforced concrete elements. GPR profiles through RAAC display a characteristic low-amplitude, diffuse return pattern. Results are reported with photographic evidence and annotated scan data.
Chester
Compressive strength testing at The Grosvenor
We carried out a combined rebound hammer and UPV compressive strength assessment at a Grosvenor-managed commercial property in Chester ahead of a change-of-use application. Testing covered ground floor columns and first floor flat slab construction, reported to BS EN 13791, with results delivered within 48 hours.
Southampton docks
Ultrasonic thickness survey
We completed an ultrasonic thickness survey on reinforced concrete jetty soffit panels at a commercial berth in Southampton using the Olympus 38DL Plus. Access was by boat-mounted platform at low water. Results identified localised thinning consistent with chloride-induced reinforcement corrosion, allowing the asset owner to prioritise repairs.
NDTScan is a Level 4 UKCSS Operator, the first in the UK to achieve that certification. Every survey is carried out and interpreted by a named specialist and reported to a standard suitable for engineering acceptance.
Every survey, wherever it is, is carried out and interpreted by a named specialist and reported to a standard suitable for engineering acceptance, building control and dispute work.
Where a repair is being considered, the same rule applies in every county: scan first, interpret properly, then design.
Scan before you repair. That is the standing advice for every the UK client, and the reason NDTScan reports what the concrete contains before anyone specifies what to do about it.
Services Available Nationwide
- GPR Concrete Scanning Pre-drill and pre-coring surveys, rebar and mesh mapping, post-tensioned tendon detection, void detection, slab thickness and cover measurement and RAAC identification, anywhere in the UK.
- Ultrasonic Testing of Concrete Ultrasonic pulse velocity, pulse echo and SONREB for uniformity, thickness, delamination and compressive strength estimation where GPR alone cannot answer the question.
- Concrete Compressive Strength Assessment Rebound hammer, UPV combined method and managed core extraction to BS EN 13791, with independent reporting for engineering acceptance and building control.
How Our Coverage Is Organised
Coverage is organised by county for Buckinghamshire, Berkshire and Oxfordshire, where every town and village of 1,000 people or more has its own page, and by city for the rest of the country. Each page sets out the local building stock, the surveys we are most often instructed for there and the questions clients ask before booking.
About NDTScan
NDTScan is a specialist non-destructive testing company based in Oxford and led by Neil Smuts. Its core disciplines are GPR concrete scanning, ultrasonic testing and in-situ compressive strength assessment, brought together in its concrete scanning and structural condition survey service. NDTScan is a Level 4 UKCSS Operator, the first in the UK to achieve that certification.