About us

The Survey Association, known generally as TSA, is the trade body for commercial survey companies in the UK.

The association was formed in 1979 to give a focus for private sector businesses in land and hydrographic survey.  It is important to realise, however, that it is not a regulatory body.

The role of TSA is to promote best practice amongst its members, provide a forum for members for discussion, debate and continuing professional development and, to the wider audience such as engineers and architects, provide guidance on new methods and techniques and a list of suitably qualified and experienced companies.

Today, the association has over 200 companies in membership as full, associate, supplier, affiliate or academic members directly involved in the geospatial profession.

TSA is also involved in lobbying Government departments when appropriate and other agencies such as the Environment Agency regarding policies likely to affect or involve the survey profession.

TSA meets regularly with RICS and CICES on a range of issues and has established a group called the SLG, or Survey Liaison Group. This body convenes at regular intervals to examine matters of mutual interest and to ensure that there is little or no duplication of effort by the three bodies.  Representatives from the Geospatial Commission also regularly join SLG meetings.

The Secretariat

TSA has a dedicated Secretariat to look after the day to day running of the association and has seen substantial and sustained growth over recent years.

Rachel Tyrrell FCInstCES

Secretary General

Rachel Tyrrell has been involved full-time with TSA since 1998 and has overseen the tremendous growth of the association in that time. She is responsible for the management of a dedicated team, which is based in both Newark and Worcester.

Rachel works closely with Council to ensure TSA members enjoy an ever growing list of membership benefits and she also represents the association when meeting with key stakeholders in the surveying profession.

She also directly supervises all of TSA’s social media output, website content and on-going PR strategy.

Susan Murphy

Office Manager

Susan Murphy joined the Secretariat in 2010 and just like the rest of the team she lives and breathes TSA.  Her enthusiasm, organisation and communication skills all contribute to the smooth running of the Secretariat.  She particularly enjoys working directly with the members, welcoming them to TSA events and is always happy to help.

Susan administers the Technical Committee, which produces client guides and briefing notes for the benefit of TSA members and the general public.

She also spent five years in France living the “good life” before moving back to England in 2009.

Laura Lynn

Accounts Manager

Laura is a qualified accountant, having gained AAT Level 4 Diploma in Accounting.  She has extensive experience of working in both private and practice, mostly in a small business environment, and joined the TSA team in October 2015.

Laura has brought an array of new skills and talent to the Secretariat, ensuring the Association continues to be as efficient and as organised as possible particularly with regard to the financial aspect.  She enjoys the unique challenges and opportunities that running a successful trade association brings.

Harry Tyrrell

Office Assistant

Harry Tyrrell joins TSA fresh from Sixth Form and adds his strong IT skills to the Secretariat team in his first office job.

Harry is the point of contact for members on updating their profiles on the website and will be assisting Susan with data analysis, keeping TSA files in good order and therefore ensuring the smooth running of the operational side of TSA.

Council members

TSA is governed by an elected Council comprising twelve member companies. The Council is subdivided into four core committees: Public Relations (PR), Membership & Internal Affairs (MIA), Technical and Finance. The role of the Secretariat is to efficiently run the day-to-day operation and liaise with the membership.

Nick HampsonMalcolm Hughes Land Surveyors Ltd


I have worked within the land survey profession since graduating from Newcastle University in 1983, working for twelve years for instrument manufacturers Carl Zeiss and Geotronics before joining Malcolm Hughes Read More

Oliver VineyAtlantic Geomatics (UK) Ltd


Oliver, Managing Director of Atlantic Geomatics, brings a fresh and different perspective to The Survey Association Council. With a degree in Marketing and a background in Business Development and Sales, Read More

Graham MillsTechnics Group

PR Committee

I started in the profession as a trainee Site Engineer / Surveyor for a Building Contractor / Developer. I completed the Higher National Certificate in Building Studies and CIOB computing Read More

Andy RobertsFormby Surveys Ltd

Technical Committee

I have over 23 years geomatics experience, initially as a field surveyor, but latterly planning the strategy and growth of Formby Surveys as Managing Director since 2007.  Whilst Formby Surveys Read More

Maddy Lees40SEVEN Ltd

Technical Committee

Since graduating from Newcastle University I’ve worked in surveying for more than 25 years, both as a field surveyor and in management roles, in the UK, Middle East and Africa. Read More

Steve HurpEvolution Surveys Ltd

Technical Committee

I have over 35 years in the survey profession with experience of large-scale topographical surveys, hydrographic, rail, quarry, and landfill.   I am the Managing Director of Evolution Surveys and an Read More

Nick SpenceleyCatsurveys Ltd

MIA Committee

Having joined Catsurveys Ltd in 2013 which was my first engagement within the geospatial environment, it has been truly enlightening in understanding the profession and witness the professionalism of the Read More

Claire FenwickSpatial Dimensions Ltd

PR Committee

After University I decided to retrain as a Geomatics Surveyor and went on to complete the TSA Surveying Course in 2006. Specialising in measured building surveys and 3D models, I Read More

Lucy PowersPowers

PR Committee

Powers have been active members of the TSA for 20 years. During my 12 years with the company, I have been inspired by how TSA have increased the visibility and Read More

Stuart DimondMK Surveys Ltd

MIA Committee Chair

Stuart joined MK Surveys in 1984 as a trainee surveyor.  Training to HNC level in both Civil Engineering and Land Surveying, he has been delivering high quality Land, Engineering and Read More

Nathan SpencerCSL Surveys (Stevenage) Ltd

MIA Committee

Managing director of CSL Surveys (Stevenage) , working in the profession for 26 years, FCInstCES. Although originally pursuing a career in Law I was struck by the variety of work Read More

Sam RobertsMet Geo Environmental Ltd

Technical Committee Chair

I graduated in Archaeology from Durham University in 1998 and spent some time researching how soil geochemistry affects buried objects before starting a career in field archaeology, quickly finding an Read More

Our Aims

To provide a vehicle for members to act effectively together on agreed courses of action

To promote the interests of the profession to all those who determine the economic and social conditions in which the profession operates;

To identify and represent the views of the profession