Key Personnel

Richard Piggin - General Manager

Richard is General Manager of Sixense UK.

Richard started his career in the Soletanche Freyssinet Group of companies in 1996, working on the Jubilee Line Extension project at Green Park where he got his first taste of monitoring works being employed for compensation grouting and tunnelling.

Since then, Richard has spent the last thirty years of his career working in both the foundations sector with Bachy Soletanche Ltd and the I&M sector with Soldata/Sixense, gaining a wide-ranging experience in both geotechnical engineering and monitoring on projects such as the Copenhagen Metro, CTRL, Amsterdam Metro, Crossrail, HS2 and many more between.

Matthew Knight - Head of Monitoring

Matthew Knight is Sixense Limited’s Head of Monitoring.

Matthew started working with the group in 1994 as a Surveyor/Monitoring Engineer on the Jubilee Line Extension’s Southwark Station. He managed the Instrumentation subcontractor and was responsible for the geotechnical instrumentation installations, automation of the instruments and managing the approvals processes.

In 1995 Matthew was transferred to Hong Kong and was part of the initial team to establish the business unit whilst working on the Central Reclamation – Central station project. He was involved with multiple large-scale infrastructure and rail projects include land reclamation works, high rise buildings and rail infrastructure works for both the Mass Transit Railway (MTRC) and the Kowloon and Canton Railway (KCRC). The monitoring solutions used ranged from manual surveys and manually read instruments, through to groups of automated total stations and fully automated geotechnical and structural instruments.

Matthew returned to the UK in 2002, working as part of the team on the Kings Cross Station redevelopment project, focusing on the Listed building and rail infrastructure monitoring for both the Network Rail and London Underground assets. With over 30 years of experience in the industry and having worked on major UK projects such as the Shard at London Bridge, Heathrow Airport, Tottenham Court Road and Bond Street Station upgrade projects, Crossrail and now across HS2, he has a wealth of experience and knowledge to deliver complex monitoring schemes.

As the Operations Manager and Head of Monitoring, Matthew’s role is to support the company in the planning and resourcing of all monitoring projects in the UK. He ensures that our quality, environmental and health and safety procedures are maintained and followed to a high standard and provides technical and practical solutions to monitoring system design.

If you have a requirement for geotechnical or structural monitoring, and would like to consult with Matthew please drop him an email – matthew.knight@sixense-group.com

Quentin Arnaud - Head of Engineering

Quentin is Sixense’s Head of Engineering.

Quentin began his journey with Soldata in 2006 as I&M Engineer on the Budapest Metro Line 4 project. In 2007, he moved to the UK to support Soldata’s work on major UK projects including station upgrades (Kings Cross, Tottenham Court Road and Bond Street), The Shard and multiple Crossrail projects (C701, C510, C340, C315).

In 2015, Quentin relocated back to Paris to support Soldata France in the delivery of large I&M programmes, including packages on the extensions of Metro Line 14 North, Line 12 North and RER E Ouest. His international expertise further expanded in 2017 when he moved to Tel Aviv to oversee the Red Line Turkish Alignment I&M package for the Metropolitan Mass Transit System.

Quentin returned to Paris in 2020 to support Sixense’s major infrastructure schemes in Romania (Bucharest M6), Poland (Łódź Tunnelling Project), France (Grand Paris Express), the UK (Thames Tideway East, HS2), and Türkiye (Çanakkale 1915 Bridge), sharing the insights he has gained through years of experience on complex international monitoring projects.

Since late 2021, Quentin has served as Sixense UK’s Head of Engineering, overseeing the Environmental Monitoring & Acoustic Consultancy Department, InSAR monitoring projects, Structural Health Monitoring and Geophysics. He is also responsible for introducing innovative engineering solutions developed within the Sixense Group to the UK market.

If you have a requirement for structural health monitoring, or would like to discuss a noise, vibration or dust (air quality) monitoring requirement, or acoustic consultation please drop Quentin an email – quentin.arnaud@sixense-group.com

Martin Dunn

Martin is Technical Manager at Sixense, bringing extensive expertise in surveying, automated monitoring, data engineering and infrastructure technology.

He began his career in land surveying before being introduced to automated monitoring during the construction of the Channel Tunnel Rail Link with Rail Link Engineering. The project was among the first in the UK to routinely collect, store and analyse monitoring data at large scale across multiple contractors, with Sixense (previously Sol Data) acting as technical partner. As the engineer responsible for managing this system, Martin developed applications to analyse TBM performance using the project dataset and collaborated with the Cambridge Centre for Smart Infrastructure and Construction to develop and trial new monitoring methods.

Following the successful completion of CTRL, Martin joined Sol Data in 2006, initially working within the Data Engineering team. He supported a wide range of major UK infrastructure projects while becoming increasingly involved in the company’s international technical activities.

Martin has since developed bespoke hardware and software solutions for Sixense clients and led the implementation and management of Geoscope monitoring software as a cloud-hosted solution. In his current role, he provides technical oversight and development for Sixense’s UK activities, while also participating in and leading research opportunities across the wider Sixense Group.

Stuart Baker - Senior Estimator and Business Development Manager (UK)

Stuart started working with the group in 1994 as an Assistant Surveyor on the Jubilee Line Extension’s Southwark and Bermondsey Stations, undertaking simple Precise Level, Tape Extensometers and Demec Gauge Monitoring. At the time, automated monitoring was in its infancy, and the humble electrolevel beam had only just started to be deployed on construction sites as a monitoring tool.

Following completion of the Jubilee Line, Stuart helped launch Sol Data in the UK and undertook the first ever installation of a CYCLOPS ATS Monitoring system in Blackpool. Other jobs followed and this helped Sol Data establish a presence in the UK providing predominantly automated monitoring solutions on projects up and down the country.

Stuart has also supported other Sixense Business units globally, including our operations in Abu Dhabi, France, Amsterdam, Bucharest, Doha, Dubai, Hong Kong, Jeddah, Melbourne and Seattle, to name a few.

Stuart is now responsible for Business Development and Estimating covering potential opportunities in the UK, Ireland and Northern Europe.

If you have a requirement for geotechnical or structural monitoring, and would like to consult with someone who has over 3 decades of experience, please drop Stuart an email – stuart.baker@sixense-group.com

Indu Gurung - Quality Assurance and Office Manager

Indu Gurung is Sixense Limited’s Quality Assurance and Office Manager

Indu has been part of the company since 2006 and is a familiar, trusted presence across the business. Indu works in a combined role as QA and Office Manager, bringing strong experience in quality assurance, compliance, and operational support. She plays a key role in maintaining quality standards, improving internal processes, and ensuring the smooth day to day running of the office.

Known for her organised approach and attention to detail, Indu leads on ISO audits and overseas the company’s quality and environmental management systems. Her practical mindset and approachable manner make her a reliable point of contact for colleagues and managers alike.

As part of her work, Indu is also a proud supporter of the company’s Equality, Diversity and Inclusion (EDI) values. She encourages a welcoming environment where everyone feels respected, supported and able to contribute.

Chris Lee - Commercial Manager

Chris has served as the Commercial Manager at Sixense Limited since February 2011, bringing with him over 24 years of extensive experience in piling and geotechnical foundation engineering prior to joining the company. Throughout his tenure, he has played a pivotal role in strengthening the organisation’s commercial processes and ensuring robust financial and contractual governance across its projects.

In his current position, Chris leads a highly capable and focused team of Quantity Surveyors who are responsible for delivering all commercial aspects of the business. This support spans the full project lifecycle, beginning with the early-stage review of contractual documentation at the enquiry phase, through detailed cost management and risk assessment during project delivery, and continuing to successful project completion and final account agreement. His leadership ensures that projects are managed efficiently, commercially sound decisions are made, and client expectations are consistently met.

Chris has been a Member of the Chartered Institute of Building since 1993, reflecting his long-standing commitment to professional excellence and industry best practice. By actively promoting and maintaining continuous professional development (CPD) for both himself and his team, he ensures that Sixense delivers a consistently high standard of service.

This commitment benefits clients not only within the UK but also internationally, supporting operations and collaboration with Business Units in Abu Dhabi, Saudi Arabia, the USA, and Australia.