“It is appropriate for the reasons of maintaining healthy trees and not compromising their future health, that the tree inspector understands how a tree works, and to understand what effects a remedial action may have on the tree as a whole.”
“The other document was the SIM 01/2007/05 published by the Health and Safety Executive (“HSE”). This document is principally aimed at local authorities and those dealing with trees on a regular basis. It sets out to balance, on the one hand, the benefit and value of trees, with the “limited” risk that they pose. At paragraph 7 of the document, the HSE say: “Given the large number of trees in public spaces across the country, control measures that involve inspecting and recording every tree would appear to be grossly disproportionate to the risk. Individual tree inspection should only be necessary in specific circumstances, for example where a particular tree is in a place frequently visited by the public, has been identified as having structural faults that are likely to make it unstable, but a decision has been made to retain it with these faults.”
“For trees in a frequently visited zone, a system for periodic, proactive checks is appropriate. This should involve a quick visual check for obvious signs that a tree is likely to be unstable and be carried out by a person with a working knowledge of trees and their defects, but who need not be an arboricultural specialist.” “Given the large number of trees in public spaces across the country, control measures that involve inspecting and recording every tree would appear to be grossly disproportionate to the risk. Individual tree inspection should only be necessary in specific circumstances, for example where a particular tree is in a place frequently visited by the public, has been identified as having structural faults that are likely to make it unstable, but a decision has been made to retain it with these faults.” “For trees in a frequently visited zone, a system for periodic, proactive checks is appropriate. This should involve a quick visual check for obvious signs that a tree is likely to be unstable and be carried out by a person with a working knowledge of trees and their defects, but who need not be an arboricultural specialist.”
“In view of the very strong buttressing on the road-side of the tree he made a reasonable judgement that the tree posed no unreasonable risk of failure.”
“Accordingly, I consider that the principles relating to a landowner’s duty in respect of trees can be summarised as follows: (a) The owner of a tree owes a duty to act as a reasonable and prudent landowner; (b) Such a duty must not amount to an unreasonable burden or force the landowner to act as the insurer of nature. But he has a duty to act where there is a danger which is apparent to him and which he can see with his own eyes; (c) A reasonable and prudent landowner should carry out preliminary/informal inspections or observations on a regular basis; (d) In certain circumstances, the landowner should arrange for fuller inspections by arboriculturists. This will usually be because preliminary/informal inspections or observations have revealed a potential problem, although it could also arise because of a lack of knowledge or capacity on the part of the landowner to carry out preliminary/informal inspections. A general approach that requires a close/formal inspection only if there is some form of ‘trigger’ is also in accordance with the published guidance referred to in paragraphs 53-55 above. (e) The resources available to the householder may have a relevance to the way in which the duty is discharged.”
“(1) In an action against a highway authority in respect of damage resulting from their failure to maintain a highway maintainable at the public expense it is a defence (without prejudice to any other defence or the application of the law relating to contributory negligence) to prove that the authority had taken such care as in all the circumstances was reasonably required to secure that the part of the highway to which the action relates was not dangerous for traffic.”