Tree owners warned over assessment of reasonable remedial action

Tree risk managers ignore reasonableness and proportionality at their peril, according to UK tree consultant Jeremy Barrell.

The warning headlined the first day at the AA Amenity Arboriculture Conference at Warwick last week, repeating the message he gave to the International Society of Arboriculture's annual conference in Sydney last month.

Barrell discussed the pros and cons of quantitative and qualitative methods of risk assessment, with reference to what English courts expect from tree owners.

"How much management is enough is one of the toughest questions to answer and of fundamental importance to duty holders," he said.

"Of specific relevance to tree advisers is whether they adopt a quantitative approach to risk assessment, expressing the level of risk with numerical calculations, or a qualitative approach, where terms such as low, medium and high are preferred."

He warned that the level of risk, however it is expressed, will not be the only matter the courts will consider. "Although the level of risk is important, so is how reasonable it is to carry out remedial works and how much it will cost.

"The courts may well decide that low risks should be actioned if it is reasonable, cost-effective and proportionate to do so. If this turns out to be the case, then risk assessors who have relied solely on the level of risk as a justification for no action may be sitting on a time-bomb just waiting for the next tree failure to trigger.

"Even if a risk is low, if the hazard is obvious and it costs very little to address, duty holders may find the courts expect them to deal with it."


Have you registered with us yet?

Register now to enjoy more articles and free email bulletins

Sign up now
Already registered?
Sign in

Read These Next

Top UK Arboriculture Businesses 2018

Top UK Arboriculture Businesses 2018

Who are the UK's biggest arboriculture businesses?

Winning designs

Winning designs

Student anniversary collaboration generates outstanding work.

Business planning - Cash-flow management

Business planning - Cash-flow management

Wider market volatility can have a big impact on cash flow but there are ways to avoid problems, Neville Stein explains.


Follow us on:
  • Facebook
  • LinkedIn
  • Twitter
  • Google +
Horticulture Jobs
More Horticulture Jobs

Horticulture Week Custodian Awards

Jeremy Barrell On...

Jeremy Barrell

Tree consultant Jeremy Barrell reflects on the big issues in arboriculture.

Products & Kit Resources