Tree Surgeon vs Arborist: What's the Difference?

The terms "tree surgeon" and "arborist" are often used interchangeably in the UK, but there are meaningful differences between the two roles. Understanding these differences helps you hire the right professional for the job.

What Is a Tree Surgeon?

A tree surgeon is a skilled tradesperson who carries out physical tree work. This includes:

• Felling trees
• Pruning and shaping
• Crown reduction and thinning
• Stump grinding and removal
• Hedge trimming and management
• Pollarding
• Emergency tree work — storm damage, fallen trees
• Climbing and aerial dismantling

Tree surgery is physically demanding, hands-on work that requires competence with chainsaws, rigging equipment, and often working at height. In the UK, the term "tree surgeon" is the most commonly used title for professionals who do this kind of work.

Tree Surgeon Qualifications

There is no legal requirement to hold a qualification before carrying out tree work in the UK — which is why checking credentials matters. Qualified tree surgeons typically hold:

• NPTC/City & Guilds certificates in chainsaw use, tree climbing, and aerial rescue
• CS30/31 — Chainsaw maintenance and cross-cutting
• CS38 — Tree climbing and aerial rescue
• CS39 — Use of a chainsaw from a rope and harness
• First aid at work certification

Many tree surgeons also hold NVQs or diplomas in arboriculture or forestry.

What Is an Arborist?

An arborist is a specialist in the science of tree care. While many arborists can and do carry out physical tree work, the term emphasises the scientific and advisory side of the profession. Arborists focus on:

• Tree health diagnosis and treatment
• Pest and disease identification
• Tree surveys and risk assessments
• Tree Preservation Order (TPO) advice and applications
• Planting recommendations and species selection
• Tree planting programmes
• Expert witness reports for planning and legal disputes
• Long-term tree management plans

Arborist Qualifications

Arborists working in a consultancy or advisory role typically hold higher-level qualifications:

• Level 4–6 diplomas in arboriculture
• BSc or MSc in Arboriculture or a related subject
• Technician or Chartered membership of the Arboricultural Association
• Lantra Professional Tree Inspector certification

A consultant arborist may not do the physical cutting themselves, but they advise on what work should be done, write the specifications, and sometimes supervise the work on site.

Key Differences at a Glance

| | Tree Surgeon | Arborist |
|---|---|---|
| Primary focus | Physical tree work | Tree science and advisory |
| Typical tasks | Felling, pruning, climbing | Surveys, reports, diagnosis |
| Qualifications | NPTC chainsaw certs, NVQ L2–3 | Degrees, diplomas, professional membership |
| Works at height | Yes, regularly | Sometimes, for inspection |
| Writes reports | Occasionally | Regularly |
| Advises on planning | Informally | Formally, with professional indemnity insurance |

The Overlap

In practice, many professionals are both. A good tree surgeon understands tree biology, can identify diseases, and knows when a tree should be preserved rather than removed. An experienced arborist can often pick up a chainsaw and do the work themselves.

At Gem Tree Management, our team includes qualified tree surgeons and arborists. This means we can assess tree health, advise on the best approach, handle council applications for protected trees, and carry out the work — all under one roof.

Which One Do You Need?

You Need a Tree Surgeon If:

• A tree needs pruning, felling, or reducing
• A storm has damaged a tree and it needs emergency attention
• You need a stump ground out
• Hedges need cutting
• Ivy is covering a tree and needs removing

You Need an Arborist If:

• You need a formal tree survey or risk assessment for a planning application
• A tree looks unhealthy and you want a professional diagnosis
• You're buying a property and want to understand the trees on site
• You need an expert report for a neighbour dispute or insurance claim
• A development project requires a BS5837 tree survey

You Need Both If:

• A protected tree needs work and you need both the application and the surgery
• You're managing a large site with multiple trees that need assessment and ongoing maintenance
• A tree has a disease and needs both diagnosis and treatment

How to Check Qualifications

Before hiring any tree professional, ask to see:

1. Proof of qualifications — certificates, not just a claim on a website
2. Insurance — public liability (minimum £5m) and employer's liability
3. Professional memberships — Arboricultural Association, International Society of Arboriculture
4. References or reviews — Google reviews, Checkatrade, Bark

Read our full guide on how to choose a tree surgeon for a complete checklist.

Working With Gem Tree Management

We've been providing tree surgery and arboricultural services across Watford, Hemel Hempstead, St Albans, and the wider Hertfordshire area since 2003. Our team holds both practical tree surgery certifications and professional arboricultural qualifications, so whatever your tree needs — from a quick hedge trim to a full BS5837 survey — we've got it covered.

Call 0208 2061 073 or get a free quote.

Frequently Asked Questions

Is an arborist the same as a tree surgeon?

Not exactly. A tree surgeon focuses on the physical work — cutting, climbing, felling — while an arborist specialises in the science of tree care, including health assessments, surveys, and advisory work. Many professionals hold qualifications in both areas.

Do I need an arborist for a planning application?

If your local planning authority requires a tree survey (BS5837), you'll need a qualified arborist or arboricultural consultant to prepare the report. A tree surgeon alone cannot usually provide the formal documentation planners require.

Are tree surgeons regulated in the UK?

Tree surgery is not a legally regulated profession in the UK, meaning anyone can call themselves a tree surgeon. This makes it essential to check qualifications, insurance, and professional memberships before hiring. Look for NPTC/City & Guilds certificates and Arboricultural Association membership.

What qualifications should a tree surgeon have?

At minimum, look for NPTC/City & Guilds certificates in chainsaw use (CS30/31), tree climbing and aerial rescue (CS38), and first aid. Ideally, they should also hold NVQ Level 2 or 3 in arboriculture and be a member of a professional body like the Arboricultural Association.

How much does an arborist survey cost?

A basic arboricultural survey for a residential property typically costs £300–£600. A full BS5837 tree survey for a development site ranges from £500 to £2,000+ depending on the number of trees and site complexity. Contact us for a free quote.