Airborne & Terrestrial LiDAR

LiDAR.CO.UK is a specialised part of Merrett Survey Limited's worldwide survey services. We provide a full range of laser scanning services, including airborne laser scanning surveys, ground-based terrestrial laser scanning and mobile laser scanning. We can also supply a bathymetric laser scanning service. Listed below are just some of the laser scanning projects that we have been involved in, we also have a dedicated site for mobile scanning surveys and terrestrial laser scanning.


project 1

Airborne laser scanning

Surveying 240 miles north of the Arctic Circle in Greenland presents many challenges, but Lidar provided a rapid and detailed survey to enable the design of a new open pit mine, plus access road to/from the camp/dock location, 600 below. We also own and operate a terrestrial laser scanner that can be deployed to scan the interior of mines and can deploy a remotely operated vehicle where access to the mine is difficult.

If you are looking to source a LIDAR survey, please contact us with details regarding the service you require. We can provide or source LiDAR surveys for you based an independent appraisal of your requirements.

If you are a LiDAR service provider, we can provide independent confirmation of LiDAR accuracy and offer GPS and ground control services - worldwide. We also offer a full range of LiDAR processing services, such as proivding coordinate transformation services and processing the LiDAR into digital products such as DEM, DTM and contour maps. Products for this job included LiDAR data, contour maps, imagery and digitised features plus ground surveyed boreholes locations

project 2

Terrestrial laser scanning


We have recently carried out terrestrial laser scanning of a power station which was needed to determine how to install new equipment ensuring clash avoidance. A 3D model of the power station was created from the scan data and delivered to engineering firms who carried out the FEED (Front End Engineering and Design) study. We can scan your plant or factory to ensure that retrofit design projects are carried out efficiently by reducing clashes and rework.

Merrett Survey are able to supply BIM (Building Information Management) models, our intelligent 3D models assist and inform project decision making, making it easier to acheive project goals. We are able to supply a bespoke BIM project in a variety of formats including REVIT models.


Merrett Survey Limited - Aerial Imagery

Mobile laser scanning


We specialise in rapid mobile laser scanning surveys.

Our mobile laser mapping system can be mounted on any vehicle or vessel for rapid mapping of quarries, cliffs, harbours, ports, construction sites and much more. We collect millions of accurate survey points, the 'point cloud' data can be used for a wide variety of applications, including calculating accurate stockpile volumes, in-situ mineral reserves, slope stability studies, quarry and open pit planning.

Mobile laser scanning enables huge savings in time and personnel when surveying large areas. The LiDAR system contains an integrated INS, RTK GNSS system and high speed laser scanner. The system is lightweight, highly portable and can be mounted on vehicles or vessels to acquire 3D data of topography, urban developments, quarries, open pit mines,overhead utility cables, bridges, dams, harbours, beaches and river banks.



Merrett Survey Limited - Terrestrial Laser Scanning Heritage

Airborne LiDAR


Image shows contours and sections derived from Airborne LiDAR

LiDAR surveys are ideal for studying erosion / movement monitoring of coastal slopes. The combination of airborne LiDAR data and GIS technology facilitates the rapid production of geomorphological maps. LiDAR is ideal for studying fluvial features on floodplains. Digital Elevation Models (DEM's) can produced, which accurately represent landform surface variability and offer an important opportunity to measure and monitor morphological change and sediment transfer across a variety of spatial scales.

We can process the LiDAR for analysis to best suit your requirements. For example, we can produce contour models, cross sections, maps coloured by elevation, reflectance, aspect etc...We can output the data in many formats for use in a variety of programs including AutoCAD or for use in a GIS. We can also analyse the data, for example by producing maps showing water flow directions and flood maps or by calculating volumes.

Our experience with mapping coastal areas includes combining terrestrial laser scan data with airborne LiDAR to map a large coastal area at Lyme Regis. Deliverables included highly accurate volume computations. Beach profiles, contour maps and topographic details. Additional promotional products included animation flythroughs and LiDAR pointcloud.

Merrett Survey Limited - Terrestrial Laser Scanning Heritage

Terrestrial Laser Scanning

Cliff Monitoring

Laser scanning provides a fast and safe method by which the rock face can be measured. Block sizes can be established and cross sections and contour models can be produced for use in rock fall modelling applications. Complex meshing allows for fracture mapping and fracture orientation to be established. The image (left) shows a laser scan of a cliff face with previous cross section lines merged in with the point cloud. The cliff face was meshed and then the site revisited following a rock fall. By comparing the two meshes, the volume of material that had been eroded was calculated.

The white lines show cross sections recorded years before, now superimposed on the 'point cloud' to show erosion over time.

Laser scanning can reveal source zones from previous rockfall, and potential falling blocks can also be located within the scan data. This technology can prevent the need for dangerous manual surveying, which can be time consuming and dangerous.

Laser scanning provides data to study a range of parameters including discontinuty data such as persistence, dilation & roughness; and estimates of the dip and dip direction of discontinuities in the rock face. Analysis includes block size measurement and cross sections, data can be imported to rockfall modelling applications.


Merrett Survey Limited - Terrestrial Laser Scanning Ships Hull

Mobile LiDAR



Shoreline mapping - the Dynascan can be mounted on any vehicle such as a quad bike or small survey boat. It can be used for outfall mapping, slope analysis and we can process the data to provide a wide variety of products including contour charts, Digital Terrain Maps and 3D flythroughs. Overhead utility cables, bridges, dams, beaches, rivers, harbours, canal banks and more can all be accurately mapped.

The image shows a boat mounted laser scanner for surveying the foreshore and cliffs in inaccesible locations.

This survey also used a multi-beam echosounder to record sea bed levels.

Merrett Survey Limited - Airborne LiDAR surveys

Airborne LiDAR


The image shows part of the Thames estuary, where a new container port has been constructed. The mudflats are surveyed using airborne LiDAR data and high resolution aerial imagery, to monitor any environmental impact caused by dredging and reclamation works.

LiDAR surveys are ideal for studying erosion / movement monitoring of coastal slopes. The combination of airborne LiDAR data and GIS technology facilitates the rapid production of geomorphological maps. LiDAR is ideal for studying fluvial features on floodplains. Digital Elevation Models (DEM's) can produced, which accurately represent landform surface variability and offer an important opportunity to measure and monitor morphological change and sediment transfer across a variety of spatial scales.

We can process the LiDAR for analysis to best suit your requirements. For example, we can produce contour models, cross sections, maps coloured by elevation, reflectance, aspect etc...We can output the data in many formats for use in a variety of programs including AutoCAD or for use in a GIS. We can also analyse the data, for example by producing maps showing water flow directions and flood maps or by calculating volumes.

Merrett Survey Limited - heritage scanning

Heritage Projects

Merrett Survey have surveyed numerous historic structures, the image shows an historic church in Lytchett Matravers. We have also scanned martello towers, Mont Orguiel Castle and its historic walls and other historic structures such as Elizabeth Breakwater in Jersey.

The benefits provided by laser scanning historic structures are significant when considering large buildings and when recording detail at height is important, such as cathedrals, tall facades and historic civil engineering structures. We do not usually require special access at height in order to record dimensional details, so long as we have line of sight to the structural detail that needs to be recorded. The precise shape of a historic structure, from bulges in a wall or the irregular spacing of timbers across a ceiling can all be measured from ground level at millimetric accuracy

Merrett Survey Limited - Bathymetric Surveys

UAV Surveys

We can provide UAV surveys and video inspection services. UAV surveys provide a fast and efficient mapping service for a variety of applications including; support for planning applications, bridge and railway track inspections, powerline inspections and more. Using photogrammetry, digital terrain modelling can be carried out, allowing for the production of contour models, topographic maps and calculation of stockpile volumes etc...


  • project 1

    Airborne LiDAR

    Aerial Mapping Greenland













  • project 2

    Terrestrial LiDAR

    Modelling complex plant













  • project 3

    Mobile LiDAR

    Surveying stockpiles for volumetric analysis













  • project 4

    Airborne LiDAR

    Airborne scanning for coastal protection













  • project 5

    Terrestrial LiDAR

    Coastal monitoring Projects













  • project 6

    Mobile LiDAR

    Coastal surveying with boat mounted scanner













  • project 7

    Airborne LiDAR

    Monitoring Projects













  • project 8

    Terrestrial LiDAR

    Laser scanning for heritage projects













  • project 9

    UAV surveys

    Aerial drone survey services














About Us

LiDAR.CO.UK is a specialised part of Merrett Survey Limited's worldwide survey services. The company started trading in 1982, so in August 2012 Merrett Survey celebrated 30 years of topographical survey business. Based in the South West of England we have expanded to work throughout the world in over 50 countries including Australia, New Zealand, Algeria, France, Guinea, Bermuda, Philippines and the USA to name but a few. 

Merrett Survey was one of the first commercial organisations to invest in GPS technology so we have built up a mass of experience and knowledge. More recently we have been applying the latest surveying technologies including airborne and land based laser scanning ( LIDAR ).

It is the aim of Merrett Survey to meet the needs of our clients by providing a high quality and cost effective service. We will advise and put forward innovative ideas and new technology to benefit all parties by working in Partnership.


Merretts put forward innovative ideas and use new technology. We offer a wide range of survey services.

Our Clients

Our client list includes:-
    World Bank / Asian Development Bank
Environment Agency (UK)
Ordnance Survey (UK's National Mapping Agency)
IGN ( France's National Mapping Agency )
DPWH (Department of Public Works and Highways, Philippines)
UN (United Nations)

""Their deep understanding of GPS & rigid quality controls has particularly impressed us""

  GE Oil & Gas Client

""Merretts have shown themselves to be technically very capable, providing a positive professional approach""

  Ordnance Survey Client

"Merretts provided an excellent service when called upon. They were responsive, helpful, innovative and effective and worked well as part of the overall team delivering emergency response to the South West of England."

 The Environment Agency Client





Contact Us

3, Merlin Business Park, Fairoak Close,
Exeter Airport, EX5 2UL, UK

For UK and 'rest of the world' use-
Telephone    +44 (0) 1392 362161
Fax    +44 (0) 1392 362289   
info@merrettsurvey.com

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3, Merlin Business Park, Fairoak Close, Exeter Airport, EX5 2UL, UK

info@merrettsurvey.com

+44 (0) 1392 362161

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