About OK TREES
Established in 1995 by founder Oliver Kan, OK Trees was built on decades of hands on expertise. Oliver gained his technical knowledge during the late 80s and early 90s in Baden-Baden, Germany, where he carried out complex arboricultural work on very large specimen trees. His passion for tree care demonstrated by winning UK Tree Climbing competitions became the catalyst for serving the London area building a loyal client base across the London Borough of Barnet, BUTA, schools and private residences.
For over 30+ years, OK TREES has delivered precision arboriculture, expert tree care and large scale tree operations across London and the Home Counties. With more than three decades of experience, we provide trusted advice and solutions for all your tree needs.
Our mission remains unchanged as we move into 2026: to provide a professional, friendly and reliable tree surgery service trusted by homeowners, estates, developers and local authorities.
Oliver founded the company with a vision to raise the standard of tree care in London. Today Alex, Operations Manager, oversees all day to day operations, ensuring every project is completed with precision, safety, and exceptional service.
At OK TREES, our mantra is simple:
Be professional. Be reliable. Be polite. Deliver the best possible care for your trees.
Why choose us:
-
Specialists in Large & Complex Trees – Decades of expertise handling mature, oversized and high risk trees in restricted or difficult locations.
-
Advanced Equipment for Precision & Safety – Rigging systems, cranes, MEWPs, stump grinders and specialist machinery for complex operations.
-
TPO & Council Applications Handled for You – We manage all Tree Preservation Orders and Conservation Area paperwork, start to finish.
-
Tidy & Respectful Service – Minimal disruption, full property protection and immaculate clean up after every job.
-
Approved Contractors – Trusted by the London Borough of Barnet, Innovation Group and Global 360 for ongoing arboricultural work.
-
£10 Million Public Liability Insurance – Complete coverage for residential and commercial properties.
-
Environmentally Responsible – All waste is recycled or repurposed with a commitment to replanting and sustainable arboriculture.
NPTC CERTIFIED ARBORISTS
All tree works are carried out by fully trained, NPTC-certified professionals ensuring safe, compliant and industry-approved standards on every job.
CHAS ACCREDITED
We meet rigorous CHAS health & safety requirements, guaranteeing safe working practices for schools, councils, estates and commercial environments.
APPROVED CONTRACTOR LONDON BOROUGH OF BARNET
Trusted by the London Borough of Barnet to deliver high quality tree works across public spaces, highways, parks and residential areas.
£10 MILLION PUBLIC LIABILITY COVER
Comprehensive £10 million insurance gives full protection and peace of mind for homeowners, landlords, estates, developers and commercial clients.
Trusted & Accredited
