Dangerous and diseased trees​

Report a tree emergency

You can carry out any works to your trees without our permission as long as it is not:  

  • covered by a Tree Preservation Order (TPO) within a conservation area  
  • restricted by a planning condition on a previously approved application 

Protected trees that are dangerous or diseased

If your tree is protected in a conservation area or subject to a TPO the following applies.

  1. Before pruning or cutting down a tree that presents an urgent and serious safety risk or cutting down a dead tree you must give the council 5 days written notice before carrying out the works, except in an emergency, when notice should be given as soon as possible after the work is carried out to make it safe. The onus is on you to provide evidence to us that the tree was or is in fact dangerous. We strongly recommend that you collect evidence to show that the tree was dangerous, for example, photographs or video of the condition and/or a report from an independent qualified tree specialist as we may require proof at a later date.
  2. If you want to cut down a protected dying tree or remove dying branches from a protected tree, you should contact the trees team for advice before you undertake any works .

Ash Dieback Disease known as Hymenoscyphus fraxineus

This disease is caused by a fungus which results in leaf loss and crown dieback. It can ultimately result in the death of affected trees.

The government has introduced measures to help tackle the disease, focusing on:

  • reducing the rate of spread
  • developing resistance to the disease in the mature UK ash tree stock
  • encouraging citizen, landowner and industry engagement in surveillance, monitoring and action in tackling the problem
  • building resilience in the UK woodland and associated industries

More information is available on current threats and guidance on the Forestry Commission website. You can also do your bit to help identify and map the disease in the UK by visiting Ashtag and downloading their app.