PAS128 Utility & GPR Surveys in Crawley & Gatwick
PAS128 utility surveys and GPR surveys across Crawley, Manor Royal and the Gatwick area, a short drive from our head office in Horsham.
Call Us For A Free Quote 0345 548 5451- Head office in Horsham, West Sussex
- PAS128 quality levels QL-D to QL-A
- EML + GPR detection, CAD drawings
Underground utility surveys in Crawley & Gatwick – find it before you dig
Ambler Group carries out PAS128 utility surveys and GPR surveys in Crawley & Gatwick for main contractors, groundworkers, M&E contractors, developers, consultants and facilities teams. Crawley and Gatwick are a short drive along the A264 from our Horsham head office, so we can be on site quickly across the town, Manor Royal and the airport area.
Need more than buried services? We also carry out topographical surveys in Crawley & Gatwick and CCTV drainage surveys. Find out more about our utility surveys and GPR surveys across the UK on the main Ambler Group website.
Contact usUtility surveys on Crawley & Gatwick sites
Crawley is a post-war new town wrapped around a much older village, with the Manor Royal business district and Gatwick Airport to the north. The ground below it is busy: estate-wide distribution networks, private HV and communications cables on the business parks, airport and hotel infrastructure, fuel and drainage systems, and modern fibre laid over older services in the neighbourhood estates.
On airport-side, industrial and town-centre sites a desktop records search alone rarely gives the full picture. We locate services with EML and GPR, separate congested runs, and deliver drawings on OS National Grid for the design team. Typical work includes unit refurbishments and yard works on Manor Royal, logistics, hotel and car park schemes around Gatwick, and highway and infrastructure works for the newer neighbourhoods such as Forge Wood and Kilnwood Vale.
Typical Crawley & Gatwick utility survey instructions
- PAS128 survey of a Manor Royal service yard ahead of new loading bays and drainage
- GPR survey of a hotel car park near Gatwick before EV charging ducts and lighting columns
- Borehole clearance for a ground investigation on a logistics site
- Concrete scanning of an office slab before coring for new risers
Utility and GPR survey services in Crawley & Gatwick
People search for this work in different ways – a PAS128 survey, a utility survey, a GPR survey, an underground service survey, a cable and pipe locating survey or a utility mapping survey. On construction and commercial sites in Crawley & Gatwick they usually mean one of the services below, and we provide all of them.
Desktop utility searches in Crawley & Gatwick
Records from the water, gas, electricity, telecoms and fibre operators compiled before site work (Survey Type D).
Find out morePAS128 detection surveys in Crawley & Gatwick
Services located with EML and GPR and drawn to PAS128 quality levels QL-B1 to QL-B4 (Survey Type B).
Find out moreGPR surveys in Crawley & Gatwick
Ground penetrating radar for plastic pipes, ducts, chambers, voids and old foundations that cable locators miss.
Find out moreUtility verification (QL-A) in Crawley & Gatwick
Services verified at chambers and exposed in trial holes at critical crossings and clash points.
Find out moreBorehole & trial pit clearance in Crawley & Gatwick
Service clearance of borehole, trial pit, piling and post positions before drilling or digging.
Find out moreConcrete scanning (ferroscanning) in Crawley & Gatwick
GPR scanning of slabs and walls for rebar, tendons and conduits before coring, drilling or cutting.
Find out moreWhat we plan for on Crawley & Gatwick utility surveys
Airport-side sites
Work at or near Gatwick can need passes, escorts and agreed time slots, which we plan with you before the survey.
Private networks
Business parks carry private HV, fire mains and data cables that are on no utility record – we trace them and show them separately.
Clay ground
Weald Clay across much of Crawley limits GPR depth, so EML and chamber inspections carry more of the detection.
Busy roads
Surveys on the A23 and estate distributor roads are planned around traffic management and highway permits.
Utility surveys for construction projects in Crawley & Gatwick
Main contractors, groundworkers, M&E contractors, developers and consultants use our utility surveys at every stage of a project in Crawley & Gatwick – from early design through to the moment the excavator arrives on site.
Design and feasibility
Desktop records and a detection survey early on show where services run and how deep they are, so the design avoids costly diversions.
Before you dig
A PAS128 survey with GPR, marked out on site, gives groundworkers a reliable picture before excavation, piling or ducting starts, in line with HSE guidance HSG47.
Borehole and trial pit clearance
Positions for site investigation, piling and fence posts checked and cleared before drilling or digging.
Records and handover
Utility drawings in CAD for the design team, the health and safety file and future works on the site.
What your utility survey includes
- Desktop utility records search from the asset owners (Type D)
- Site reconnaissance matching records to covers, markers and street furniture (Type C)
- Detection with electromagnetic location (EML) and ground penetrating radar (GPR) (Type B)
- Verification at chambers and exposed services where required (Type A)
- Every service labelled with its PAS128 quality level, including QL-B1 to QL-B4
- CAD drawings (DWG/DXF) tied to OS National Grid, with depths where detected
- Services marked out on site in paint or pegs on request
- Survey report setting out the methods used and any limitations
We locate services with Radiodetection RD8200 and RD8100 cable and pipe locators with signal transmitters, and Proceq GS8000 ground penetrating radar, positioned with GNSS and total stations on OS National Grid.
How it works
- 1
Send us the site
Email a site plan or marked-up aerial showing the area, plus what you need it for and any access notes.
- 2
Fixed quote and RAMS
We confirm the survey type, quality level and days on site, and issue site-specific RAMS for your induction.
- 3
Survey on site
Our surveyors attend from our Horsham head office, a short drive from Crawley, set out any traffic management, and survey with EML and GPR.
- 4
Drawings and mark-out
You receive the CAD drawing and report, and services can be marked on the ground for your excavation team.
PAS128 Utility & GPR Surveys in Crawley & Gatwick | Frequently Asked Questions
Q1: How quickly can you carry out a utility survey in Crawley?
A: Crawley is a short drive from our Horsham head office, so most surveys in the town, Manor Royal and around Gatwick can be booked in short order once scope and access are agreed. Tell us your deadline when you send the site plan and we will confirm a date with the quote.
Q2: Do you survey sites at and around Gatwick Airport?
A: Yes. We survey hotels, car parks, logistics units, offices and construction sites around Gatwick. Where work is inside the airport boundary, we follow the airport’s access and security process and plan times and escorts with you or the principal contractor.
Q3: Do you survey on Manor Royal?
A: Yes. Manor Royal sites often have private HV cables, fire mains, interceptors and older drainage that are not on any record, so we trace these and show them on the drawing alongside the public services.
Q4: What is a PAS128 utility survey?
A: PAS128 is the British Standards Institution specification for detecting, verifying and locating underground utilities. It sets out four survey types (desktop records search, site reconnaissance, detection and verification) and labels every service on the drawing with a quality level, so designers and contractors know how reliable each line is.
Q5: What is the difference between a GPR survey and a utility survey?
A: Many people call a utility survey a GPR survey. In practice we use both electromagnetic location (EML) and ground penetrating radar (GPR) together: EML traces metallic cables and pipes, and GPR picks up plastic pipes, ducts, chambers and other features that a cable locator cannot see.
Need a service & ready to book? Call us 0345 548 5451
Email usWhy choose Ambler Group for PAS128 utility and GPR surveys in Crawley & Gatwick?
Head office in Horsham
Our head office is in Horsham, West Sussex, so your site in Crawley & Gatwick is covered by our southern survey teams – a local firm that knows the area.
Utility surveyors first
Detecting buried services is our core work, using EML and GPR together and reporting to PAS128 quality levels so you know how far to rely on each line.
Everything in one visit
PAS128 utility, GPR, topographical and CCTV drainage surveys from one team, with one set of RAMS and one coordinated set of drawings.
If you’re looking for reliable, professional PAS128 utility and GPR surveys in Crawley & Gatwick, contact us today!
Other surveys we provide in Crawley & Gatwick
Ambler Group is a full surveying company. Book your utility survey alongside any of these and get one team, one set of RAMS and one coordinated set of drawings.
Topographical Surveys in Crawley & Gatwick
Measured site surveys of levels, features and boundaries in CAD, ready for design, planning and setting out.
Find out moreCCTV Drainage Surveys
Commercial and construction CCTV drainage surveys, drain mapping and graded defect reports.
Find out moreGPR Surveys & Concrete Scanning
Ground-penetrating radar for non-metallic services, voids, and concrete scanning (ferroscanning) of slabs and structures.
Find out moreDesktop Utility Searches
Statutory record (STATs) searches from asset owners, compiled into a single pack before site works or design.
Find out moreBorehole Clearance
Service clearance of borehole and trial pit positions for site investigation contractors.
Find out moreMeasured Building Surveys
Accurate floor plans, sections and elevations of existing buildings.
Find out moreClients Reviews
“Ambler Group have been our number one go to for all of our topographical, UGS & GPR Surveys.”
Ryan, Director – Topographical, Utility and GPR
Helpful survey guides
PAS128 Quality Levels Explained: QL-D to QL-A
What QL-D, QL-C, QL-B1 to B4 and QL-A mean on a utility drawing, and which one your project needs.
Read the guide GuideWhat Does a PAS128 Utility Survey Cost?
The factors that set the price of a PAS128 or GPR utility survey, and what to send for a fast, fixed quote.
Read the guide GuideUtility Records in England: STATs Searches, LSBUD and NUAR
Where utility records come from in England, what NUAR does and does not give you, and why records alone are not enough.
Read the guidePAS128 Utility & GPR Surveys near Crawley & Gatwick
Also covering the rest of West Sussex – see all areas.
Utility & GPR survey Horsham
PAS128 utility surveys and GPR surveys across Horsham town and district, from our head office in Horsham itself.
View areaUtility & GPR survey Reigate & Redhill
PAS128 utility surveys and GPR surveys across Reigate, Redhill, Horley and Merstham, a short drive north of our Horsham head office.
View areaUtility & GPR survey Haywards Heath & Burgess Hill
PAS128 utility surveys and GPR surveys across Haywards Heath, Burgess Hill and Mid Sussex, a short drive from our Horsham head office.
View areaContact Us
Book a survey in Sussex & Surrey
For a fast, fixed quote, send us:
- The site address or postcode
- A site plan or marked-up aerial image showing the survey area
- What the survey is for – design, planning, excavation, piling or records
- Access notes – working hours, permits, inductions
We usually come back with a fixed quote the same or next working day.
Head office:
Ambler Group Limited
Springfield House, Springfield Road,
Horsham RH12 2RGCompany registration number: 12568344
Areas we cover:
Horsham, Crawley and Gatwick, Haywards Heath and Burgess Hill, Worthing, Chichester, Guildford, Woking, Reigate and Redhill, Epsom and Leatherhead, Camberley and Farnham – and the rest of Sussex, Surrey and the South East.