Listing of approved contractors at the Arboricultural Association website.

Northwich, Cheshire 'Arbonauts' provide information on their tree work, consultancy and community activities.

Arboricultural contractors and consultants carrying out all aspects of tree work in London and the south east.

Tree surgeons with several offices in the Southeast.

Arboricultural services from southeast London.

Care and preservation of ornamental trees, felling, stump grinding, woodchipping and hedge cutting. Agents for Entec Woodchippers.

Tree surgeons and arborists working in the South East of England; site has many broken GIFs and links.

Specialists in all kinds of tree surgery, including felling, pruning, remedial work and planting. Based in the South East of England.

Arboricultural and forestry services, based in the Southwest of England.

Arboricultural services, Oxfordshire: tree surgery, felling, planting, stump grinding and removal, hedge trimming, tree surveys, long-term management plans; supply of firewood and woodchip.