
Greenfield Development with Deep Foundations
CPT-based intrusive UXO detection integrated with a geotechnical investigation on a site where historical analysis revealed undocumented bombing risk in an apparently low-risk rural setting.
The challenge
Although the site appeared low-risk due to its rural setting, S.I UXO’s historical analysis identified previous military activity and undocumented bombing incidents within the wider area. Standard surface magnetometry was insufficient given the depth of proposed foundations and the nature of the residual risk.
Our approach
S.I UXO deployed its tracked CPT-based intrusive UXO detection system, integrating UXO verification with the geotechnical investigation. This approach provided high-confidence interrogation of deeper strata, addressing residual risk associated with large unexploded aerial ordnance. Combining the UXO and GI scope eliminated programme duplication and reduced overall cost.
The outcome
- UXO risk conclusively reduced to ALARP
- No requirement for additional borehole magnetometry
- Combined UXO and GI scope reduced duplication and cost
- Robust technical justification accepted by client and designers
More case studies.

Bath Street / Construction / Development
UXO Identification and Controlled Excavation — Bath Street
Full-cycle UXO management from desk study through CPT investigation to the confirmed identification and safe management of a WWII SC50 Luftwaffe aerial bomb, delivered entirely in-house.

North West England / Mixed-use Redevelopment
Time-Critical Enabling Works
Rapid deployment of UXO supervision for enabling works under a compressed programme, with zero downtime and strong H&S outcomes despite short-notice appointment.

Southern England / Infrastructure / Utilities
Infrastructure Corridor — Linear Works
Segmented UXO mitigation strategy for a utility installation crossing areas of historical military training. The scope was proportionate, localised, and fully CDM compliant.
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