Meet the Team


At JCA, we have a specialist team of personnel that each specialise in the different areas that we offer services in. Want to find out more about our team before you get in touch? Here is a bit of information about all our members.

Principal Consultant & Managing Director

Jonathan Cocking

F.R.E.S., Tech. Cert. (Arbor.A), PDipArb (RFS) FArborA CBiol MSB. MICFor. Jonathan is a Registered Consultant and Fellow of the Arboricultural Association and sits on its Professional Committee. He has 31 years experience in the Arboricultural profession and served for eight years as Senior Arboriculturist with a large local authority before establishing JCA in 1997. Jonathan has since developed JCA’s portfolio of services and its extensive client base. He is a Chartered Biologist, a Chartered Arboriculturalist and an Expert Witness with much experience of litigation work.

Technical Director

Toby Thwaites

BSc (Hons), HND (Arboriculture). Toby joined JCA in 1998 after graduating in Ecology at the University of Huddersfield and has since graduated in Arboriculture at the University of Central Lancashire. A former JCA team leader and Consulting Arboriculturist, Toby is now Technical Director and oversees all office and on-site activities at JCA and is on hand to offer technical support and advice.

Operations Director

Charles Cocking

FdSc (Arboriculture), MArborA. Charles joined JCA in January 2014 as an Apprentice having previously worked for the company on a part time basis during 2013. Charles obtained his Foundation Degree in Arboriculture at Askham Bryan College, York and is now Director of Operations at the company. His roles include contract, staff and cash management, whilst focusing on general business growth and offering support to both Managing and Technical Directors.

Consulting Staff: Arboriculture

Andrew Bussey

LANTRA Accredited PTI.  Andrew joined JCA having spent 12 years working as a tree surgeon for various private companies and a Local Authority. He has various NPTC qualifications, is QTRA qualified and has a LANTRA certificate in Professional Tree Inspection.

Phil Humeniuk

FdSc (Arboriculture). Phil joined JCA having spent 3 years working for various tree surgery companies and as a Tree Officer for a Local Authority. He also has several years experience working as a consultant both for JCA and for another consultancy. Phil obtained his foundation degree in Arboriculture at the University of Central Lancashire and has various NPTC’s and is LANTRA certified in Professional Tree Inspection.

Emily Wilde

FdSc (Arboriculture). Emily joined JCA having previously worked for various private tree surgery and consultancy companies over the past 8 years. She initially obtained a ND in Forestry & Arboriculture, followed by a FdSc in Arboriculture at Askham Bryan College, York. Emily has various NPTC certificates and is QTRA qualified.

Mick Eltringham

ND (Forestry). Mick joined JCA after spending 12 years working in the industry for various private companies in the north and south of England. He has also spent the last five years working as a consultant for two canopy research projects in the Amazon Rainforest, working with Oxford University and the University of Arizona. He has various NPTC Qualifications.

Dan Kemp

FdSc (Arboriculture). Dan joined JCA with nearly 30 years’ experience in arboriculture. He worked as a London Tree Officer for 12 years and in several arboricultural and horticultural management posts, specialising particularly in tree risk assessments and tree related subsidence.

Ryan Bateman

BSc (Hons)FdSc (Arboriculture) TechArborA. Ryan joined JCA in 2020 after working as a Lecturer on the Foundation Degree in Arboriculture at Askham Bryan College in York. Ryan has both practical skills, NPTC qualifications and theoretical knowledge and owned his own contracting business prior to, and whilst working as a lecturer.



Principal Ecologist

Adam West

BSc (Hons) Animal and Wildlife Management. DBS checked. Adam joined JCA to lead the expanding ecology department. Having returned to education as a mature student, Adam studied Countryside Management for two years before undertaking a bachelor’s degree in Animal and Wildlife Management, for which he was awarded First Class Honours. Adam has many years’ experience in ecological consultancy, working on projects ranging from individual planning applications to national infrastructure projects. Adam holds a Natural England Level 1 great crested newt survey class licence, a Natural England Level 2 bat survey class licence (and the Scottish and Welsh equivalents) and a CSCS card. Adam is a member of CIEEM.

Consulting Staff: Ecology

Joe Earnshaw

BSc (Hons) Animal Management, MSc Biodiversity and Conservation. DBS checked. Joe joined the ecology department of JCA in 2018 after taking part in JCA’s student training programme. He initially obtained a bachelor degree in Animal Management from Askham Bryan College, York. He has since furthered his education and brings to the company an MSc in Biodiversity and Conservation from the University of Leeds. Joe has expertise in aquatic invasive species identification and control and is currently working towards acquiring his protected species licences.

Francesca Sykes

MSc Conservation Biology, BSc (Hons) Wildlife biology. DBS checked. Francesca joined JCA after having been a seasonal ecologist for two years. She has worked on large and small infrastructure projects across the UK and is competent in various field surveys and report writing. Francesca also has experience of project administration duties for large infrastructure projects. While at JCA Francesca is working towards her bat licences.

Other Team Members

Accounts Manager
Catherine Cocking

Administrative Assistant
Lorraine Spink

Marketing Manager
Lisa Beedham

IT Director
Simeon Haigh BSc (Hons)

Credit Controller
Kelly Saunders

Request a call back

Not sure where you stand on an arboricultural or ecological related issues? At JCA our specialist team are here to help you, contact us today!