Magnum GSI Ltd

GeoScreen™

Controlled Ground Risk Screening — Magnum GSI Ltd
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⚠️ GeoScreen currently operates across England only. Expansion to Wales and Scotland is in development.
Ground risk screening · England · From £75 + VAT

Know what's in the ground
before you commit

A controlled geotechnical decision-support product for development professionals. 11 rule-governed geohazard ratings, 15 annotated figures, professional narrative — delivered by email in minutes, not days.

Get your report now →
£180 inc. VAT · No subscription · Pay per report · Report by email in minutes
Magnum GSI Ltd — Chartered Geotechnical Engineers
Cyber Essentials certified
UK GDPR compliant
BGS · EA · Historic England · Natural England · MRA
GeoScreen™ UK trade mark

How it works

Three steps. No login. No waiting.

1

Enter your site

Postcode, full address, or OS grid reference. Add client name, proposed use, and your email. Takes under a minute.

2

Instant multi-source analysis

GeoScreen queries 12+ public datasets in parallel — BGS geology, Environment Agency flood, historic landfill, and permitted facilities registers, EA LiDAR terrain data, Historic England, Natural England, Mining Remediation Authority, BGS radon, and more.

3

Report in your inbox

Your full ground risk screening report — complete with RAG ratings, annotated figures, and rule-governed professional narrative — arrives by email in minutes.

What's in the report

A complete Tier 1 preliminary desk study — the same structure a geotechnical engineer would produce, with every rating and finding governed by explicit rules.

11 geohazard RAG ratings — Mining Legacy, Compressible Ground, Shrink-Swell Clay, Slope Instability, Dissolution, Made Ground, Flood Risk, Surface Water Flood, Radon, Ground Gas, and Source Protection Zone
15 annotated figures — geology, superficial deposits, flood risk (river and surface water), surface water flood, LiDAR terrain model, heritage assets, mining constraints, radon potential, source protection zones, EA regulatory context, and three historical map epochs
Rule-governed professional narrative — 16 sections covering site setting, planning context, historical land use, geology, hydrogeology, geohazards, foundation guidance, and conclusions
Conceptual Site Model — sources, pathways, and receptors based on confirmed historical land use and geology
Borehole records — nearest BGS borehole records from the SOBI national database, tabulated and mapped
Delivered as an editable DOCX — open in Word or Google Docs. Extract findings and key data, or incorporate into a wider report. Every report is archived exactly as sent, so the record of what was produced is always preserved on our end — PDF editing tools mean that protection was never as secure as it once seemed.
GeoScreen is a controlled geotechnical decision-support product — not an AI report generator. Every hazard rating, geology description, planning constraint, and suitability statement is governed by an explicit rule, enforcing consistent, defensible outputs across any site in England.

Choose your level of assessment

Tier 0 and 1 work from a point reference with BGS 1:625,000 geology. Tier 2 and 3 work from your site boundary layer with higher-resolution geology data at additional licensing costs.

Tier 0
Ground Risk Snapshot
£90 inc. VAT
£75 + VAT
  • 11 geohazard RAG ratings
  • 15 annotated figures
  • RAG summary table
  • Key takeaway (2–3 lines)
  • Site referenced by point (postcode, address, or grid reference)
  • No professional narrative
  • No borehole table
  • Desk-based, remote — no site visit
  • Delivered in minutes
Order now →
Tier 2
Enhanced + Engineer Review
On request
24–48 hr turnaround
  • Everything in Tier 1
  • Site referenced by your boundary layer
  • Higher-resolution geology data
  • BGS 1:50,000 geology
  • Chartered engineer QA review
  • Desk-based, remote — no site visit
Coming soon
Tier 3
Full Professional Report
Custom quote
Via Magnum GSI Ltd
  • BS 5930:2015 compliant
  • Authored by Chartered Engineers
  • Site referenced by your boundary layer
  • Higher-resolution geology data
  • Site walkover option
  • Available now
Visit Magnum GSI →

See a sample report

Download a real GeoScreen report — different sites, different risk profiles. Client names have been replaced with fictional placeholders.

Bath, BA1 2LY — Dense historic urban core
Very High

Lias Group geology with Class 5 radon, dissolution risk, Bath World Heritage Setting, and multiple Grade I and II* listed buildings within the site vicinity. A complex, high-hazard site.

↓ Download Tier 1 sample
Consett, DH8 5AJ — Former industrial town
High

Coal Measures bedrock, former steel works, mine entry records, made ground, and DHRA. Shows how the system handles heavy industrial legacy and ground gas risk.

↓ Download Tier 1 sample
Romford, RM1 3EJ — London urban fringe
Low

Thames Group London Clay, no significant geohazards identified. A clean baseline report — shows what a Low-risk site looks like and what the report still covers in full.

↓ Download Tier 1 sample
Tewkesbury, GL20 5RD — Lias/Triassic boundary
High

Dissolution risk from Lias limestone horizons, River Avon SAC, Flood Zone 3, and a heritage-dense setting. A geologically complex site at a major formation boundary.

↓ Download Tier 1 sample
Bedhampton, PO9 3JF — Source Protection Zone
High

Source Protection Zone 1 (Inner Protection Zone), Radon Class 3, and ground gas risk from Coal Measures geology. Shows how groundwater planning designations interact with geotechnical hazards.

↓ Download Tier 1 sample
Bedhampton, PO9 3JF — Ground Risk Snapshot
High

The same site as a Tier 0 Ground Risk Snapshot — RAG summary table, key takeaway, and all figures without the full AI narrative. Compare with the Tier 1 report above to see the difference between tiers.

↓ Download Tier 0 sample

Order your Ground Risk Screening Report

Choose Tier 0 (snapshot) or Tier 1 (full report). Delivered by email in minutes.

Ground Risk Guides

Understand ground risk before you order a report. Free guides written by a Chartered Geotechnical Engineer.