40—Standard of care to be expected of persons professing to have a
particular skill
In a case involving an allegation of negligence against a person (the
"defendant") who holds himself or herself out as possessing a particular
skill, the standard to be applied by a court in determining whether the
defendant acted with due care and skill is, subject to this Division, to be
determined by reference to—
(a) what
could reasonably be expected of a person professing that skill; and
(b) the
relevant circumstances as at the date of the alleged negligence and not a
later date.