Joining CAS

Become a Member Today

At CAS, our primary objectives are to empower, educate, and advocate for our members. We offer comprehensive support through our community magazine, featuring regular articles on industry advancements, technical seminars, product evaluations, and exclusive offers. Our commitment to fostering growth is demonstrated by our year-round schedule of discounted courses and seminars held throughout the UK, which deliver high-quality training.

We further champion our members by promoting their services via the CAS Member Directory and through print advertising, ensuring they gain the visibility they deserve.

We understand that not everyone is ready to become Professional Members or wish to operate as consultants. Whether you’re still navigating your path or simply desire to contribute to the work of CAS without practicing as a consultant, we welcome you to join us as ‘Associate Members’. Join CAS today and be part of an organization that values and supports your professional journey.

Arboriculture in sussex
Arboriculture in surrey

It's Easy to Apply for Members

This category is for those who support the aims of CAS, and wish to receive the magazine, but have not become accredited (and may not wish to).  Associate members benefit from discounts on CAS-run courses.

Simply complete the following form and a member of of our committee will be in contact to take you through the next steps

Your Questions Answered

Yes! Providing the accreditation is comparable to the CAS course, it is transferable.

Prospective members are required to have a minimum of four years of relevant industry experience, of which at least one year needs to be in a role providing advice. This could be working as a tree officer, or leading tree works operations where you are advising clients. If in doubt, please ask. We also require that you hold a recognised qualification in arboriculture to QCF level four or above. This can include the AA Technician’s Certificate, or a Foundation degree. If you do not have such a qualification, we simply ask that you be willing take this within five years of joining.

CAS recognises eight Areas of Professional Competency. You need to be accredited to at least one of these. You also need to have Professional Indemnity Insurance to at least £500,000 (and preferably £1,000,000).

Yes. Whilst industry experience is valuable and important, the accreditation means that you can demonstrate you have been independently assessed to the relevant industry standard.


  • Mortgage & Insurance Reports (both courses run by CASand by Myerscough College are recognised)
  • BS5837:2012 Trees in Relation to Design, Demolition and Construction: Recommendations. By peer review
  • Lantra Professional Tree Inspector
  • Tree Preservation Orders: Effectively Administration.
  • Amenity Tree Valuations
  • Expert Witness
  • Quantified Tree Risk Assessment
  • Young Trees: Achieving Longevity in the Landscape

Yes! It is not the value of the commission but the potential scale of the claim that you are insuring against. It is important that all CASProfessional Members are properly insured.


You get to use the CAS logo, a listing on the CAS site for each of the APCs you are accredited for, the member discount for all CAScourses and, of course, full access to the CAS magazine site.


No. You as an individual are the member, not your company or employer.

Yes! We include a strong search engine optimised link to your website from the CAS directory.

No! As you will not be practicing as a consultant under the CAS banner, these are not requirements.

There can be a great variation in the standard of these reports, and many do not meet the requirements of the British Standard. By submitting a sample report for peer review, when it is successful, you can demonstrate that you have an acceptable template.


No. Indeed, CAS recognises that whilst some consultants provide a wide range of services, others specialise.

You can pay by annual cheque (£125 + VAT), annual standing order (£115 + VAT) or monthly standing order (£10 + VAT).

Trusted Partnerships