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.

Consulting Staff: Arboriculture

Toby Parsons

Cert. Arb. (RFS), Tech. Cert. (Arbor.A). Toby joined JCA after spending 6 years working as a senior climber for various Arboricultural contractors in the East Midlands and the South-West. He has gained the Level 2 Certificate in Arboriculture (RFS) and an Arboricultural Technicians Certificate. Toby is LANTRA certified in Professional Tree Inspection.

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.

Charles Cocking

FdSc (Arboriculture). 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 part of our qualified Arboricultural consultancy team.

Robert Hickey

FdSc (Arboriculture) TechArborA. Robert joined JCA in January 2019 after having spent 18 months as a groundsman and part time climber. Robert obtained his foundation degree in Arboriculture at Myerscough college and has various NPTC qualifications. Robert will be focusing his time on a large council project, managing and undertaking risk assessments on local authority owned trees.

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.

Russell Pearce

BSc (Hons) Arboriculture. Russell joined JCA in January 2020 with 8 years’ experience within the arboriculture industry and having graduated in Arboriculture from University of Lancashire in 2014. He has experience working in the public and private sector, having previously worked for Kent County Council, Medway Unitary Council and reputable consultancy firms. Russell is LANTRA certified in Professional Tree Inspection and has various NPTC qualifications. He also has experience carrying out CAVAT valuation surveys, and TEMPO assessments in relation to the statutory protection of trees.

Consulting Staff: Ecology

Amanda Beck

Cert/He in Field Ecology and Diploma in Conservation & Field Ecology. A member of the Chartered Institute of Ecology and Environmental Management (CIEEM) and Botanical Society of Britain & Ireland (BSBI). Holds a Natural England and  bat licence and a Natural England Level 2 Great Crested Newt license and also Natural Resources Wales & Scottish Natural Heritage Newt Licenses. DBS checked. Amanda joined JCA’s ecology department in 2018, previously working as a freelance Ecological Consultant in North Wales and as a trainee Ecologist in South Wales. Amanda has a background in surveying for botanical, amphibians, birds, terrestrial and marine mammals along with small mammal trapping and invertebrate research work on SSSI sites. She has practical experience in habitat management and creation while working as a volunteer for North Wales Wildlife Trust.  Amanda has obtained her Natural England Great Crested Newt License and is a member of the Butterfly Conservation Trust, Bat Conservation Trust, Clwyd Bat Group and the British Hedgehog Preservation Society.  Amanda is currently studying for a masters degree in Biological Recording and Ecological Monitoring.

Joe Earnshaw

BSc (Hons) Animal Management, MSc Biodiversity and Conservation 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.

Amy Reddick

MSc Conservation Biology & Associate CIEEM member

Amy joined JCA’s ecology department in 2020 after working for an ecological consultancy in Yorkshire for the past 4 years. She possesses a Natural England Class II Bat Licence to handle bats and has experience undertaking surveys for various protected species including badgers, great crested newts, barn owls and otters. She is confident in identifying a range of botanical species and habitats in order to produce robust Preliminary Ecological Assessments. During her time as a consultant Amy has developed in depth knowledge of UK wildlife and habitat legislation and their relevance when assessing the impacts of development proposals. Amy has a CSCS card and a Wilderness first aid certificate.

Other Team Members

Accounts Manager
Catherine Cocking

Administrative Team Leader
Sue Guest

Administrative Assistant
Lorraine Spink

Marketing Manager
Lisa Beedham

IT Director
Simeon Haigh BSc (Hons)

Credit Controller
Kelly Saunders

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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!