Sutro Group Ltd

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Sutro Group Ltd Providing unrivalled support for multiple industry sectors, using state of the art, sustainable tech

23/10/2026

Sutro Group supports asset owners across the UK and Europe with specialist access and inspection, from our centres in South Wales, the South West and GdaΕ„sk. Combining rope access, drones, robotics and NDT means we can choose the right method for each job and deliver it as one team.

Here’s a look at the sectors we work in:
πŸ”Ή Oil and gas
Advanced NDT including PAUT, corrosion mapping and CUPS inspection, alongside IRATA rope access and drone surveys of stacks, flares and pipework. We also provide confined space rescue cover for vessel and tank entries.

πŸ”Ή Power generation
UAV inspections of stacks, vents and high-level plant, Elios 3 internal inspections of boilers and ducting, and NDT on pressure systems and welds – reducing the need for scaffolding and shutdown time.

πŸ”Ή Renewables
Onshore wind turbine blade and tower inspections using drones and rope access, with NDT where defects need closer investigation.

πŸ”Ή Water utilities
Robotic crawlers and remote visual inspection for pipes, tanks and other confined environments, supported by trained confined space rescue teams.

πŸ”Ή Industrial and manufacturing
MPI, UT and visual inspection of cranes, kilns, process units and structural steel, using rope access and robotics to reach difficult areas safely.

Across every sector, our work is backed by ISO 9001, ISO 14001 and ISO 45001 certification, IRATA membership, CAA authorisation and BINDT membership.

If you’d like to talk through an upcoming inspection or access challenge, get in touch.

πŸ“ž 0800 069 9395
βœ‰ [email protected]

found more than 187,000 hours of sewage spills on dry days in England last year. When overflows spill without rain, the...
15/10/2026

found more than 187,000 hours of sewage spills on dry days in England last year.

When overflows spill without rain, the cause is often in the network itself, such as groundwater getting into sewers or blockages from wipes and fats.

In our latest article, we look at where these hidden problems sit and how inspection can find them:

πŸ”Ή Elios 3 drone inspection of large sewers, chambers and storm tanks, with the team outside the space
πŸ”Ή HOMC ultrasonic testing for corrosion at pipe supports, without lifting pipes or stopping flow
πŸ”Ή UAV survey and IRATA rope access for elevated pipework and structures
πŸ”Ή Confined space rescue cover for AMP8 construction work

Read the full article: https://www.sutrogroup.co.uk/news/sewer-inspection-uk-storm-overflows/

🌬 750+ wind turbines. 16 countries. Zero first aid incidents.Sutro Group, in partnership with IAG, has delivered a large...
09/10/2026

🌬 750+ wind turbines. 16 countries. Zero first aid incidents.

Sutro Group, in partnership with IAG, has delivered a large-scale wind turbine inspection programme across Europe and Canada, covering turbines from 120m to 160m in height.

Our two-person teams combined rope access with advanced PAUT inspection to assess hubs, tower welds, blades and structural bolting, applying the same encoded scanning methodology on every site. That consistency meant clients received comparable data whether the turbine was in Poland or Spain.

Read the full case study here. πŸ‘‡

https://www.sutrogroup.co.uk/wind-turbine-fleet-europe/

No shutdown. No draining. No confined space entry. A robot that inspects the tank while it stays in service.Working with...
02/10/2026

No shutdown. No draining. No confined space entry. A robot that inspects the tank while it stays in service.

Working with our partner , we completed an autonomous robotic inspection of a UK diesel storage tank without draining the product or taking the facility offline. Square Robot's submersible platform, certified for hazardous environments, captured high-resolution ultrasonic data on the tank bottom while fully submerged β€” data our team then turned into an actionable maintenance plan.

Our Technical Director Richard Denmead has called it exactly the kind of field-proven technology that fits how Sutro already works, at a time when UK industrial inspection is modernising fast.

πŸ“ž 0800 069 9395 βœ‰ [email protected]

When should structural steel actually be inspected?Steel doesn't fail without warning. Corrosion, fatigue cracking and c...
24/09/2026

When should structural steel actually be inspected?

Steel doesn't fail without warning. Corrosion, fatigue cracking and connection wear all show up before a structure becomes unsafe. The question is whether anyone's looking on a fixed schedule, or only after something prompts a look.

Three things drive the right frequency:

1. Age and environment. Older structures, or those in corrosive or coastal conditions, need closer attention.
2. Any change in load or use.
3. Visible deterioration, such as surface corrosion or connection movement.

Inspection itself usually combines a visual survey with NDT: magnetic particle inspection for surface and near-surface cracking, and ultrasonic testing for wall thickness. Access is by rope access or drone survey, depending on the structure.

The goal isn't inspecting everything constantly. It's knowing which parts of a structure carry the risk, and checking those on a schedule that matches how quickly that risk changes.

πŸ“ž 0800 069 9395 βœ‰ [email protected]

Preparing a vessel for NDT starts well before the inspection itself.Our confined space team completed a full internal cl...
22/09/2026

Preparing a vessel for NDT starts well before the inspection itself.

Our confined space team completed a full internal clean of a Nickel Decomposition vessel, removing process residue and buildup to give clear, unobstructed access to the vessel walls. Our NDT technicians carried out the inspection itself the very next day β€” same team, same site visit, no waiting on a separate contractor to mobilise.

Both stages were carried out under full confined space procedure, with atmospheric monitoring and a rescue plan in place throughout.

That's the value of running clean and inspection under one team: less time on site, less coordination overhead, and inspection data that's only as good as the access it was collected through.

πŸ“ž 0800 069 9395 βœ‰ [email protected]

17/09/2026

A construction company has been fined Β£60,000 after a worker suffered life-changing injuries falling through an unprotected roof light β€” no scaffolding, guard rails, or harness system had been used.

Falls from height accounted for around a quarter of all worker deaths in Great Britain during 2025/26 (HSE). It remains one of the most preventable causes of serious injury in our industry.

Rope access and drone inspection exist to engineer this risk out β€” removing the need for unprotected access wherever the task allows.

If your current access method leaves anyone exposed to a risk that could be designed out, it's worth a conversation.

Source:
https://press.hse.gov.uk/2026/08/06/construction-company-fined-60000-after-worker-seriously-injured/?utm_source=linkedin&utm_medium=social+&utm_campaign=prosecution-push

15/09/2026

We recently attended and exhibited at Defence Security Resilience Cymru, Wales's flagship defence, security and resilience supply chain event, at the ICC Wales in Newport.

Great opportunity to showcase how our inspection services can benefit the defence sector, and to connect with organisations across the supply chain.

πŸ“ž 0800 069 9395 βœ‰ [email protected]

Hands-on learningThis summer, we welcomed a Year 13 student from St. Joseph's Roman Catholic School into the workshop fo...
11/09/2026

Hands-on learning

This summer, we welcomed a Year 13 student from St. Joseph's Roman Catholic School into the workshop for some work experience.

Highlights included flying the Elios 3 drone under guidance, and sitting down with Adam Viney to work through the inspection data it collected, seeing first-hand how raw flight footage turns into a usable 3D model and actionable findings.

It's always a pleasure to give young people a real look at the industry, not just what confined space and drone inspection involves, but the kind of career paths available in it. We hope it was a valuable experience, and we wish the student all the best for the year ahead.

πŸ“ž 0800 069 9395
βœ‰ [email protected]

πŸ€– Autonomous robotic inspection: keeping tanks in service while they're inspectedSutro Group, in partnership with Square...
27/08/2026

πŸ€– Autonomous robotic inspection: keeping tanks in service while they're inspected

Sutro Group, in partnership with Square Robot, recently completed an autonomous robotic inspection of a 128ft diesel storage tank in the UK β€” while the tank remained fully in-service and filled with product.

Using Square Robot's C1D2-certified autonomous technology, the inspection was carried out over 6 days, with comprehensive analysis and reporting delivered within two weeks. The results:

βœ… 1,039 hours of confined space entry eliminated
βœ… Β£948,000 in total cost savings
βœ… 10,586 lbs of CO2e emissions prevented
βœ… Tank remained in-service throughout β€” no drainage, no production disruption

As Richard Denmead, our Technical Director, put it: this kind of collaboration "introduces field-proven innovation... offering our clients a solution that transforms integrity management with improved cost-effectiveness and safety compliance."

Read the full case study here πŸ‘‡
https://www.sutrogroup.co.uk/case-studies/autonomous-robotic-inspection-at-uk-diesel-tank/

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Frazer Building, 126 Bute Street
Cardiff
CF105LE

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