Insights

Technical insights.
Survey, inspection and geospatial intelligence.

Guides, industry commentary and technical articles from the Angell Surveys team — covering UAV survey, LiDAR, inspection, BIM and the regulations that govern them.

How to Survey a 250-Hectare Solar Farm and BESS Site: Method, Control, Deliverables and Accuracy article image
Technical Guides

How to Survey a 250-Hectare Solar Farm and BESS Site: Method, Control, Deliverables and Accuracy

A large ground-mounted solar and battery storage site is surveyed in one fixed-wing UAV sortie carrying LiDAR and a metric camera, controlled by a GNSS ground-control network tied to OSGB36 and Ordnance Datum Newlyn, and verified against independent check points. This guide sets out the method we used on a 250 ha Lincolnshire DCO site, the flight and control parameters, the deliverable set each consenting workstream needs, and the accuracy achieved.

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Our UAV Survey Fleet: WingtraRAY with MAP61, WingtraOne GEN II with RGB61, DJI Zenmuse L3 LiDAR on the Matrice 400, the Matrice 4E, and Flyability Elios for Confined Spaces article image
Technical Guides

Our UAV Survey Fleet: WingtraRAY with MAP61, WingtraOne GEN II with RGB61, DJI Zenmuse L3 LiDAR on the Matrice 400, the Matrice 4E, and Flyability Elios for Confined Spaces

Angell Surveys flies two Wingtra vertical take-off fixed-wing aircraft for large-area and corridor photogrammetry — the WingtraRAY with the 61 MP oblique MAP61 camera and the WingtraOne GEN II with the 61 MP RGB61 — and the DJI Zenmuse L3 LiDAR on a Matrice 400 for bare-earth capture under vegetation and for overhead lines, with a Wingtra LiDAR payload hired in for the largest envelopes, the DJI Matrice 4E for small sites, and Flyability Elios collision-tolerant aircraft for confined-space inspection. This guide sets out what each platform is for, the resolution and coverage it gives, and how every aerial survey is controlled and verified to RICS Band F or better.

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How Accurate Is a Drone LiDAR Topographical Survey? article image
Technical Guides

How Accurate Is a Drone LiDAR Topographical Survey?

A drone LiDAR topographical survey is normally specified to RICS Band D or Band E and its accuracy is proven by independent check points, not by the sensor brochure. This guide explains the bands, what governs the achieved accuracy, and what the accuracy report must show.

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From OSC to UK SORA: Our Transition and BVLOS Roadmap article image
Regulation

From OSC to UK SORA: Our Transition and BVLOS Roadmap

UK SORA has replaced the Operating Safety Case as the route to complex and BVLOS drone operations. After nine years under an OSC, Angell Surveys transitions to SORA in March 2027 — here is what the framework involves and how it underpins our BVLOS roadmap.

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