About Urban Tree Management
Urban Tree Management NW Ltd is an independent arboricultural consultancy based in Bolton, working across Greater Manchester, Lancashire, Cheshire, Merseyside and nationally.
We carry out no tree works of any kind. That independence is the point: every recommendation we make reflects what the tree and the project need, not what would generate work for a contractor. And every project is led start to finish by the consultant who attends the site.
What Sets Us Apart
Most arboricultural questions can be answered from the ground. The difficult ones cannot — a cavity at the base of a veteran oak, a fungal bracket on a mature beech over a playground, a union that looks wrong from below.
We hold the full diagnostic suite in-house: Arbotom sonic tomography, Rinntech Resistograph R650 resistance drilling, ArWiLo wind load analysis, ArboStApp structural assessment and ArboRadix root plate mapping. Very few consultancies in the North West can carry out this level of investigation without subcontracting it — which is why other arboricultural practices, including some of our closest competitors, subcontract their decay detection to us.
For a client, that means a valued tree is assessed on evidence rather than assumption. Retention is supported where the tree is sound, and where removal is genuinely justified the case is defensible.
Development & Planning
Development work is the core of the practice. We deliver the full arboricultural planning package — BS5837 surveys, tree constraints plans, impact assessments, tree protection plans, method statements and site supervision — for schemes ranging from single householder extensions to major multi-phase development.
Project experience includes university and student-village development alongside national construction firms, large residential and commercial schemes, healthcare and care home development, civic and crematorium sites, canal and infrastructure works, and NHBC Chapter 4.2 foundation design support for housebuilders. We work directly for developers and land agents, and as arboricultural consultant to architects, planning consultants and ecological practices.
Early involvement is where the value sits. Constraints established before a layout is fixed get designed around; constraints discovered after submission get designed out of, expensively. We provide feasibility appraisals at acquisition stage, CAD-ready output your design team can work directly from, and the full submission package when a scheme proceeds.
Long-Term Client Relationships
A significant proportion of our work is recurring. Schools, academy trusts, healthcare providers, estates and commercial portfolios keep their tree stock on managed inspection cycles renewing every twelve to twenty-four months, and some of those relationships have run for years across multiple sites.
A client who commissions a survey once is buying a document. A client who keeps you on cycle for a decade is telling you the document was worth having — that the recommendations were proportionate and the budget was respected.
It produces better work as well. By the third or fourth inspection of a site we know its history: which trees were flagged and why, what has changed, what was acted on. Change gets measured rather than guessed at.
Alongside the surveys we write the tree risk management policy that sits above them — inspection regimes, risk zoning, roles and responsibilities — aligned to HSE guidance and the National Tree Safety Group's Common Sense Risk Management of Trees. For a trust managing trees across many sites, that turns a scatter of separate surveys into an auditable safety management system.
Our Team
Urban Tree Management is led by Carl Riva, working alongside experienced associate consultants where a project calls for additional capability or capacity. Between them the team holds over 30 years of industry experience and professional membership of the Arboricultural Association.
Owner & Principal Arboricultural Consultant
Carl Riva Dip Arb L6, MArborA
Carl is the founder and Director of Urban Tree Management NW Ltd, with over 16 years across every part of the arboricultural profession — climbing arborist, arboricultural team leader, tree surveyor, and consultant to local authorities, housing associations and other consultancies throughout the North West. He leads the company's operations, manages its longstanding client portfolio, and personally carries out the full range of surveys, reports and specialist investigations the practice delivers.
His expertise covers BS5837 planning surveys and technical notes, impact assessments and method statements, tree constraints and protection plans, large-scale hazard evaluation, QTRA risk assessment, tree risk management strategy, and internal decay detection.
In October 2024 Carl attended an advanced international tree diagnostics seminar led by Frank Rinn — the world's leading authority on sonic tomography, static load testing and resistograph technology — alongside John Harthill on fluid mechanics, Professor Lynne Boddy on fungal biology, Jill Butler on ancient and veteran trees, and Ted Green on tree preservation. That level of continuing development is rare in the profession, and it shows in the accuracy of every decay investigation we carry out.
Experience
- Over 16 years in the arboricultural industry
Specialist Areas
- BS 5837 surveys and preparing Technical Notes, Constraints & Opportunities reports, Impact Assessments & Method statements
- Site supervision works
- Tree Safety Inspections & Risk Management
- Large scale hazard evaluation assessments
- Internal Decay Detection Investigations
Qualifications
- Royal Forestry Society Certified Arborist
- Level 2 Certificate in Arboriculture
- Level 4 Diploma in Arboriculture
- Level 6 Diploma in Arboriculture
- Professional Member of the Arboricultural Association
- Lantra Professional Tree Inspection Certificate
- Licensed user of Quantified Tree Risk Assessment
- NPTC LOLER Inspector
- Enhanced (DBS) checked
- CSCS White Academically Qualified Person Card
Associate Arboriculturist
Michael McCann RFS Cert Arb, PTI
Michael works with Urban Tree Management as an associate arboriculturist, bringing specialist capability to climbing inspections, decay detection and woodland management.
He has over 15 years in the industry and is Tree and Woodland Manager at Haigh Hall in Wigan — one of Greater Manchester's most significant historic estates — responsible for approximately 360 acres of historic woodland, covering conservation, safety oversight, habitat enhancement, planting programmes and long-term management planning. Hands-on woodland management at that scale is experience few consultants in the region can match.
Before Haigh Hall he was Arboricultural Team Leader at RHS Bridgewater, one of the most significant horticultural projects in the UK, where his work spanned tree management, safety, planting and long-term stewardship. His career has also included commercial council contracts and extensive experience in sonic tomography and Resistograph investigation.
Experience
- Over 15 years in the arboricultural industry
Specialist Areas
- Tree Health & Safety Surveys
- Woodland Management
- Climbing Assessments
- Tree Analytics and Advanced Diagnostics
- Tree Procurement & Planting
- Pest and Disease Monitoring
Qualifications
- Royal Forestry Society Certified Arborist
- Level 2 Certificate in Arboriculture
- Level 4 Diploma in Arboriculture (In Pogress)
- Lantra Professional Tree Inspection Certificate
- Enhanced (DBS) checked and are registered
- CSCS Card

Health & Safety
Urban Tree Management operates a robust health and safety management system across all survey and site-based activities. We provide written health and safety policies, site and task-specific risk assessments, and biosecurity policies for all project work. All site-based consultants and associates are Enhanced Disclosure and Barring Service (DBS) checked and registered on the DBS online update service. We use the PeopleSafe lone worker app to ensure the safety of all personnel undertaking lone working on site.
Independent Arboricultural Consultants — Greater Manchester, Lancashire & Cheshire
From pre-purchase reports for homeowners to BS5837 planning packages for developers, decay detection for other consultancies, and cyclical risk programmes for housing associations and local authorities.
Get in contact with our highly experienced and personable team of arboricultural consultants today, to discuss your requirements and to obtain your zero obligation quotation.








