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PAS128 Surveys
With decades of experience, Subvision delivers expert surveying services tailored to meet the diverse needs of our clients across the UK. While we provide a wide range of surveying solutions for both above and below ground, one of our core services is the delivery of advanced PAS128 survey solutions.
PAS128 Cutting-edge Technology
We deliver precise, PAS128-compliant surveys for mapping underground utilities. Our surveying process incorporates advanced electromagnetic location (EML) equipment and ground penetrating radar (GPR) systems, ensuring full compliance with PAS128 standards.
Highly Skilled Utility Mapping Surveyors
Our teams consist of highly skilled utility mapping surveyors with extensive experience in GPR and electromagnetic locating methods. Each of our utility surveyors holds NVQ Level 3 or 5 QCF qualifications in utility mapping, ensuring the highest standards of accuracy and reliability. Subvision Surveys provide a vast range of surveying services, these include Topographical Surveys, GPR Surveys, Towed GPR Surveys , Desktop Utility Search Packs and more.
Who needs a PAS128 Survey?
PAS128 surveys are used by Tier 1 contractors, developers, civil engineers, planners, utility providers and private clients. Drawing on years of industry experience, our surveys deliver detailed information on the depth and location of buried utility infrastructure and structures, including electric cables, water mains, gas mains, drainage pipes, telecom cables and fibre optic ducts, in full compliance with PAS128 requirements.
For PAS128 utility mapping, contact Subvision today.
For more information about PAS128, please see our FAQs section below, or speak to one of our experts on 0333 920 942.



PAS128 Surveys FAQ’s
A PAS128 survey is a recognised UK standard for detecting and mapping underground utilities, providing a consistent and reliable approach to utility mapping.
PAS128 is a Publicly Available Specification that sets out best practice for locating and recording buried services.
It reduces the risk of utility strikes, improves site safety and provides confidence before construction, excavation or design work begins.
PAS128 surveys can locate electric cables, water mains, gas mains, drainage pipes, telecom cables and fibre optic ducts.
GPR is used where site conditions and survey scope allow, helping to improve detection of non-metallic and unknown services.
PAS128 defines survey quality levels from desktop studies to advanced detection and verification, depending on project requirements.
They are not legally mandatory, but are widely considered best practice and are often required by clients, contractors and insurers.
PAS128 surveys are used by Tier 1 contractors, developers, civil engineers, planners, utility providers and private clients.
Accuracy depends on site conditions and survey scope, but using trained surveyors and multiple detection methods ensures a high level of reliability.
Yes. They are commonly used during early design stages to inform layouts, reduce clashes and minimise costly redesigns.
Most PAS128 surveys are non-intrusive, using surface-based detection methods without breaking ground.
Yes. Subvision Surveys often combines PAS128 surveys with topographical surveys, GPR surveys and desktop utility searches.
A desktop utility search gathers existing records from utility providers to support field survey work and improve accuracy.
Timescales depend on site size and complexity. Small sites may take a few hours, while larger sites can take several days.
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EXCELLENTBased on 6 reviews
Trustindex verifies that the original source of the review is Google.
Miguel Bathan2023-04-24Subvision Surveys is a top-notch surveying company that consistently delivers high-quality results. Their team is professional and knowledgeable, and they take the time to ensure that their clients' needs are met. I would highly recommend their services to anyone in need of accurate surveying data.Trustindex verifies that the original source of the review is Google.
Chris Weller2023-04-24I have worked with Subvision on a number of projects. I have always found their work ethic and professionalism second to none. A massive thanks to James and the Subvision team.Trustindex verifies that the original source of the review is Google.
Michael Flaherty2023-04-24Done a fantastic utility survey for me recently, will be my go-to choice for any surveying needs. I highly recommend!Trustindex verifies that the original source of the review is Google.
Mia Cotton2023-04-24Brilliant teamTrustindex verifies that the original source of the review is Google.
Bright Lights2020-01-20Very knowledgeable and friendly staff. The job itself was completed to a very high standard and the drawings that were provided afterwards were incredibly detailed and accurate. We have used similar companies in the past but these guys were so much better than all of them put together. Would definitely use Subvision again and look forward to doing so.
Have Any Questions?
Have Any Questions?
If you have any questions regarding our services feel free to contact the Subvision team.

