About us
Mr. David Ian Challice – Chartered Arboriculturist
Professional Membership
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Arboricultural Association (Grade: Fellow - Membership No. FE00598)
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The Royal Forestry Society (Membership No. 014688)
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Institute of Chartered Foresters (Membership No. 0330911)
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International Society of Arboriculture (Professional Member ID: 11218)
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Qualifications Gained
March 2019
Expert Witness — Provide written and verbal Expert Witness statements for Planning Public Enquiry
December 2009
Achieved admission into the Institute of Chartered Foresters
May 2007
Professional Tree Inspection (Lantra) including assessment (Passed)
October 2005
Achieved (NVQ) Level 6 Professional Diploma in Arboriculture (RFS)
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​Achieved Technician’s Certificate (NVQ) Level 4 (with Credit)
June 2004
NPTC Certificate of Competence in Stump Grinding Operations Level 2
May 2004
NPTC Certificate of Competence in Brushwood Chipper Operations Level 2
December 1995
NPTC- Certificate of Competence
in Chainsaw Operations (Incorporating the Standards of the Forestry Training Council) — Chainsaw Assessments
20, 21 and 22
July 1986
National Diploma (with Credit) in Arboriculture from Merrist Wood College, Worplesdon.
All Arboricultural Courses —
Best Chainsaw Operator Award
1983-84 & 1986-86
Work Experience/Education
2004 – Present
Challice Consulting Ltd. (Arboricultural Consultancy)
2003 – 2004
Self Build House Project, Surrey
1999 – 2003
Managing Director of Treeline Services Ltd. (AA Approved Arboricultural Contractor and Consultancy)
1991 – 1999
Sole Trader of Treeline (AA Approved Arboricultural Contractor — Manager/Arborist)
1987 – 1991
Partner of Treemasters Tree Care, Banstead, Surrey (AA Approved Arboricultural Contractor — Manager/Arborist)
1986 – 1987
Travelling
1983 – 1986
Merrist Wood College, Worplesdon, Surrey (Student)
1982 – 1983
Michael Dalrymple Tree Care (Tree Surgeon)
Sample of courses attended
October 2025
STWN Autumn Meeting – The Tree Council – Nutfield Memorial Hall, High Street, Nutfield, Redhill, Surrey RH1 4HE
February 2025
Zoom Online – Managing Veteran Fruit Trees (1.5-hour webinar) - Arboricultural Association hosted live seminar featuring Helen Read, Simeon Day, Martin Hayes, Reg Harris and Geoff Newman
January 2025
Zoom Online – Fluid Dynamics – Tree and Wind Interactions (1 hour webinar), Arboricultural Association hosted live seminar featuring Franziska Hunger and Jon Hartill
November 2024
Zoom Online - Surrey Tree Warden Training Introduction (2 hours)
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Tree Veteranisation Workshop at Bodium Castle - The National Trust – Bodiam, Near Robertsbridge,
East Sussex TN32 5UA
September 2024
Arboricultural Association Conference 2024 – University of Warwick Central Campus, Coventry CV4 7SH
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Advanced Arboricultural Course (3 Day Course) Knepp Farms LLP t/a Knepp Wildland Safaris
May 2024
Ancient Trees for Arborists – Mr. Jon Hartill – Knepp Farms LLP t/a Knepp Wildland Safaris
April 2024
Zoom Online Webinar - Biodiversity Net Gain: Trees and Woods – Ms. Amanda Newsome (Biodiversity
Net Gain Advisor) and Mr. Jim Smith (Urban Forestry Advisor) - Arboricultural Association (1.5 CPD Hours)
February 2024
Trees, Planning and Construction Conference – Braxted Park, Witham CM8 3EN – Sharon Hosegood
Associates Ltd.
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Zoom Online Webinar – “Why do we lose so many trees? Is decay detection in trees being discredited
by poorly executed tests and poorly interpreted results?” – Mr. James Chambers and Mr. Russell Miller – Arboricultural Association (2 CPD Hours)
January 2024
Zoom Online Webinar – Ancient Trees and Planning – Dr. Emma Gilmartin and Mr. Mr. Jim Mullholland – Arboricultural Association (1.5 CPD Hours)
September 2023
Arboricultural Association Conference Warwick 2023 – The Oculus, University of Warwick, Coventry CV4 7SH
February 2023
Zoom Online Webinar – Trees and Storms - Ms. Allyson Salisbury and Mr. Andrew Koeser – Arboricultural Association (1.5 CPD Hours)
Zoom Online Webinar – Free Modern Working Mini-Course (For Organisations) - Mr. Gavin Jones of
Meetime (1.5 CPD Hours)
Zoom Online Webinar – Trees & The Law - Dr. Charles Mynors and Ms. Liz Nicholls – Arboricultural
Association (1.5 CPD Hours)
Zoom Online Webinar– Trees in Development – Ms. Sharon Durant-Hollamby and Mr. Luke Fay Delve
into Trees Within the Development and Construction Industry
January 2023
Zoom Online Meeting – Microsoft Office 365 For Modern Working – Mr. Gavin Jones of Meetime
Zoom Online Webinar – Guidance on Soil Assessment for Trees - Arboricultural Association Course
November 2022
Refresher Professional Tree Inspection — Land Skills Training & Assessments Ltd., The Depot, Pixham Lane,
Dorking, Surrey RH4 1PH
February 2019
Courtroom Skills Training — Witness Familiarisation — Bond Solon, London
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Excellence in Report Writing — Written Evidence — Bond Solon, London
December 2016
Arboricultural Association — Valuing and Managing Veteran Trees — Warwick Room, Lantra House, Stoneleigh Park, Warwickshire CV8 2LG (Instructo: Mr. Simon Cox)
September 2016
Arboricultural Association — Introduction to Soils — Easthampstead Park Conference Centre, Wokingham, Berkshire RG40 3DF (Instructor: Mr. Andy Moffat — AA CPD Points: 6)
March 2016
Arboricultural Association — BS5837 Advanced: Managing Trees on Construction Sites —
Garden Room, South Hill Park, Ringmead, Bracknell, Berkshire RG12 7PA
(Instructor: Barrell Tree Consultancy - AA CPD Points: 6)
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Arboricultural Association — BS5837 Advanced: Tree Assessment for Planning Applications —
Garden Room, South Hill Park, Ringmead, Bracknell, Berkshire RG12 7PA
(Instructor: Barrell Tree Consultancy – AA CPD Points: 6)
February 2016
Arboricultural Association — BS5837: Tree Surveying and Categorisation — Easthampstead Park Conference Centre, Wokingham, Berkshire RG40 3DF (Instructor: Mr. Simon Scotting - AA CPD Points: 6)
October 2015
Arboricultural Association — Visual Tree Assessment Workshop for Arborists —
Exbury Gardens, Exbury, Southampton
July 2014
Lantra Awards Certificate of Training — Professional Tree Inspection —
Refresher: Instructor Mr. Guy Watson
June 2014
Quantified Tree Risk Assessment Ltd. — The Practitioner’s Guide to Visual Tree Assessment — Merrist Wood College, Worplesdon, Guildford, Surrey GU3 3PE
September 2011
‘Trees in Crisis (Part 1) — Finding Holistic Solutions to Disease and Decline’ — Royal Botanic Gardens Kew
July 2011
What’s it worth? Tree valuation methods in the UK (hosted by the Arboricultural Association) —
Wokingham, Berkshire
January 2009
Trees and their Integration into the Planning and Development Process —
Qualifying CPD Hours: 1.5 – Presented by Mr. Jeremy Barrell
May 2008
Treework Environmental Practice — Tree Management for Public Safety: A Stakeholders’ conference Towards an Industry Statement
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Visual Tree Assessment by Dr. Claus Mattheck — The Fielder Centre, Hatfield Business Park
March 2005
Quantified Tree Risk Assessment Licensed User Training —
Presented by Mr. M. Ellison, Askam Bryan College, York