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Could hidden decay be putting your trees and your site at risk?
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Get in touch with our Gristwood & Toms team
Request a quote from our certified arborists and ensure your site remains safe, compliant, and well cared for.
Internal decay is often invisible but over time, it can compromise the structure, health, and future of even the most established trees.
Decay may progress internally long before symptoms appear externally
Undetected structural changes can affect long-term tree stability
Accurate diagnosis helps avoid unnecessary removals or delays
Early detection and diagnosis of decay allows for safer, more sustainable tree management. Our reports offer clarity, reduce uncertainty, and support compliance, risk planning, and conservation goals.
PiCUS sonic tomography
Using non-invasive advanced soundwave imaging, our team can map out decay and cavities to gain valuable insight into a tree’s condition.
Resistograph assessments
Our skilled tree surveyors use Resistograph micro-drills to measure wood resistance and pinpoint internal decay. This precise, minimally invasive method adds clarity where visual checks alone aren’t enough.
We work with local authorities, developers, commercial sites, and private landownersto deliver precise tree decay assessments that support safe tree retention, informed decision-making, and effective long-term management.
Award winning and knowledgeable
Experienced in all aspects of tree health, our ARB approved tree consultants meet the highest recognised benchmarks in professional tree care and survey over 200,000 trees annually
UK wide coverage, local expertise
With a commitment to minimal disruption, our nationwide team of tree surveyors offers expert, tailored services to maintain your site’s security and compliance
Rooted in sustainability
We utilise eco-friendly practices to ensure the long-term health and vitality of our green spaces. We prioritise environmentally responsible techniques that promote the sustainability of trees in urban and rural settings.
Certified for quality, safety and sustainability
With ISO 9001, ISO 14001, and ISO 45001 accreditations, we consistently deliver excellence in quality management, environmental responsibility, and occupational health and safety.
Leading tree management technology
We are recognised as the UK’s largest user of the Ezytreev Tree & Asset Management System, showcasing expertise in tree management technology.
“I would like to commend Gristwood and Toms for their outstanding service in maintaining Enfield’s tree stock to the highest standards. Their professionalism, expertise, and reliability have been evident in all aspects of their work, from cyclical pruning and emergency callouts to tree planting and felling.”
Andy Robinson, Principal Arboricultural Officer, Enfield Borough Council
“Working with Gristwood and Toms has been a straightforward and efficient process. Their expert approach to arboricultural services ensures the safety of our highways. Clear communication and timely execution of projects, make them an asset to our operations. ”
Paul, Contract Manager, Ringway Infrastructure Services Ltd.
Delivering expert arboriculture and tree care services you can rely on.
Get in touch
Effortless
Your tree insights in 3 simple steps
Contact our expert team of arborists
Get in touch with our friendly team to discuss your needs, and we will guide you through the next steps.
Receive a free quotation
Fill out the booking form and email it back to us, and we’ll schedule your survey and get started right away.
Receive a report
Once your survey/inspection is complete, we will write your report and send it over to you.
Informed decisions start with deeper insight
At Gristwood & Toms, we provide advanced tree decay assessments and structural diagnosis to help you make informed, confident decisions about tree retention, management or removal.
Using industry-leading diagnostic technology and over five decades of arboricultural experience, we deliver precise internal evaluations without invasive damage, ensuring trees are treated with respect and decisions are based on evidence, not assumption.
From heritage sites to commercial and development sites, we support our client’s ensuring clarity, reducing liability, and supporting sustainable tree management.
