Sigma SurveyS

Sigma Surveys & Mapping Ltd was established in 2007 with a mission to deliver precise, high-specification surveys and has become one of Scotland’s largest and most respected surveying firms.

RICS Regulated - Sigma Surveys
Chartered ICES
The Survey Association
Construction Online - Gold Member
Civil Aviation Authority
Local Surveyors Direct
RICS Regulated - Sigma Surveys
Chartered ICES
The Survey Association
Construction Online - Gold Member
Civil Aviation Authority
Local Surveyors Direct
RICS Regulated - Sigma Surveys
Chartered ICES
The Survey Association
Construction Online - Gold Member
Civil Aviation Authority
Local Surveyors Direct

About Us

Sigma Surveys provides a broad range of land, building & hydrographic surveying services throughout the UK, specialising in the construction, architectural, environmental as well as the commercial & residential property sectors. With offices in Glasgow and Edinburgh, our skilled survey team utilisies advanced geospatial technologies such as 3D laser scanning, topographical surveying, drone mapping and photogrammetry to produce precise, high-quality survey data to RICS standards for our ever-growing client base.

For further details on what we can offer, please view our services below.

RICS Regulated - Sigma Surveys

Royal Institution of Chartered Surveyors

The RICS is a global professional body that accredits professionals within the land, property, construction, and infrastructure sectors. RICS members are recognised for their expertise and ethical standards in areas such as surveying, valuation, property management, and real estate development. The institution provides training, sets industry standards, and advocates for the profession worldwide. Becoming a RICS chartered surveyor involves passing rigorous exams and maintaining high professional ethics & standards.

Get in Touch

Meet The Team

    Jonathan Roman
    Richard Rennie
    Allan McKay
    Gerry Quail
    Paul Mayes
    Simon Brown
    Forbes Martin
    Callum Dowds
    Jennifer Roman

    Managing Director

    Jonathan Roman | MRICS | MCInstCES | CCES | GVC

    Jonathan brings over 29 years of industry experience to Sigma Surveys, having previously worked with some of the largest survey companies throughout the UK. As a full member of the Chartered Institute of Civil Engineering Surveyors (Chartered ICES) and the... Read More

    Director / Partner

    Richard Rennie | HND Civil Engineering | GVC

    Richard holds an HND in Civil Engineering and brings 28 years of experience in land, engineering  and building surveying. Since transitioning from a site management role in 2009, he has played a key role in developing Sigma Surveys into a... Read More

    Principal Surveyor

    Allan McKay | ProQual Level 3 | GVC

    Allan started his career at Loy Surveys in 2001, working as a trainee surveyor while attending The Survey School run by The Survey Association (TSA). This training provided him with comprehensive knowledge in land and measured building surveying. Allan joined... Read More

    Principal Surveyor

    Gerry Quail | BSc (Hons)

    Gerry graduated with Honours in Geographic Information and Mapping Science from Glasgow University in 2005. After starting his career offshore and gaining international experience, he joined Loy Surveys in Renfrew, where he worked for 11 years. Currently, as a Principal... Read More

    Principal Surveyor

    Paul Mayes | BSc (Hons)

    Paul holds a BSc (Hons) degree in Topographic Science from Glasgow University and has accumulated 26 years of industry experience with various geomatics firms across Scotland. He is currently working towards full membership with the Royal Institute of Chartered Surveyors... Read More

    Senior Surveyor

    Simon Brown | GVC

    Simon brings 27 years of industry experience, with extensive involvement in large-scale topographical surveys and machine control installations across Europe and Africa. He is GVC qualified for UAV operations in the UK and is working towards full membership with the... Read More

    Surveyor

    Forbes Martin | CST

    Forbes began his surveying career in 2014 in New Zealand as a trainee topographical surveyor. In 2016 he moved to New York, where he spent seven years working on high-rise engineering projects and topographical surveying.  During his time in the... Read More

    Surveyor

    Callum Dowds | BSc

    Callum holds a BSc in Earth Sciences from Glasgow University. He started his career with Maptek, where he worked on scanning mines and quarries in 2012. He moved on to gain more experience with other survey companies and joined Sigma... Read More

    Surveyor

    Connor Leadbeatter | BSc (Hons) | GVC

    Connor holds a BSc (Hons) in Product Design & Innovation, bringing both a creative and technical perspective to his role. He began his career with Mitie in 2023 as a CAD Technician, where he was introduced to 3D scanning and... Read More

    Accounts Manager

    Jennifer Roman | BSc (Hons)

    Jennifer joined Sigma Surveys in 2019 and is responsible for all accounting and administrative duties. She previously spent 20 years in the biotechnology industry working as a Project Manager.

Meet The Team

Testimonials

    Morrison Construction

    “Having collaborated with Jonathan and the Sigma team over many years, we sought their expertise for a tender on a project at Bangour Hospital. Sigma’s role was to create a 3D visualisation of the historic school building on the grounds, which we included as a key component of our bid. They delivered a stunningly detailed exterior model, accessible through a simple server link that allowed us to view, share, and present the data seamlessly without any additional software. Our bid was successful, and incorporating the model was instrumental in achieving that outcome.”

    Graeme Middleton

    Senior Framework Manager

    Will Rudd Davidson

    “Sigma Surveys blends modern surveying techniques with good old-fashioned service.

    I have found Jonathan’s personal involvement really assists with unusual and bespoke projects.”

    Chris Milne

    Director

    D+B Facades

    ‘’Our initial engagement with Sigma Surveys was in 2012 for a project at Glasgow University, where we explored various methods to accurately survey the facades of a campus tower block. Jonathan presented the advantages of 3D laser scanning, and his expertise together with the ability to draw existing to +/- 2mm, convinced us that this was the best approach. The survey data provided was exceptional in both quality and precision, allowing us to design our bespoke cladding off-site. The project proceeded smoothly, and since then, we have relied on Sigma Surveys for – around 75 projects – across the UK. We have developed a strong rapport with Jonathan and the team and look forward to many more years of working together.’’

    Paul Brightey

    Commercial Director

    Peter Drummond Architecture

    ‘’I’ve been delighted with the quality of Sigma’s work on historic buildings, providing us with a high level of accuracy and helping us make the best decisions we can for the care of our built heritage.’’

    Peter Drummond

    Owner

    Loader Montieth Architects Ltd

    ‘’Loader Monteith traditionally work on complex projects such as listed buildings, or tight, constrained sites with lots of trees. Sigma are our go-to surveyors, as they manage to capture all of this complexity with great accuracy and resolution. They are personable, turn around the information very quickly and it’s of superb quality.’’

    Matt Loader

    Director

    The Harris Partnership

    “I’ve worked with Sigma for 10+ years, and have always had an extremely professional, reliable and diligent service from them.  The team have always gone out of their way to ensure we’re provided with the most accurate and user-friendly information.  I would highly recommend their range of services.”

    Neil McManus

    Senior Architect

    Studio LBA

    ’We have had the pleasure of working with Sigma for over 12 years, and their commitment to excellence has consistently impressed us. Their high-quality work, reliability, and professionalism set them apart in the industry. Their attention to detail and expertise ensure that every survey is executed flawlessly, delivering accurate, timely and reliable data which has been instrumental in the success of our projects. We highly recommend Sigma Surveys to any organisation seeking a trusted partner in surveying solutions.’’

    Emily Diez

    Project Director

Clients

Workman LLP Logo
Will Rudd Davidson Logo
West Lothian Council Logo
West Dunbartonshire Council Logo
University of Edinburgh Logo
SP Energy Networks Logo
Sol Golf Logo
SLR Consulting Logo
Savills Logo
RPS Group Logo
Kier Construction Logo
Keepmoat Homes Logo
Inverclyde Council Logo
FES Group Logo
Fastned Logo
Edinburgh Zoo Logo
East Dunbartonshire Council Logo
Discovery Land Company Logo
DEME Group Logo
D&B Facades Logo
Colliers Logo
CBRE Logo
Bluesky International Logo
Belmond Logo
Emtec Logo
Graham + Sibbald Logo
Workman LLP Logo
Will Rudd Davidson Logo
West Lothian Council Logo
West Dunbartonshire Council Logo
University of Edinburgh Logo
SP Energy Networks Logo
Sol Golf Logo
SLR Consulting Logo
Savills Logo
RPS Group Logo
Kier Construction Logo
Keepmoat Homes Logo
Inverclyde Council Logo
FES Group Logo
Fastned Logo
Edinburgh Zoo Logo
East Dunbartonshire Council Logo
Discovery Land Company Logo
DEME Group Logo
D&B Facades Logo
Colliers Logo
CBRE Logo
Bluesky International Logo
Belmond Logo
Emtec Logo
Graham + Sibbald Logo