“First the court has to determine whether the claimant’s conduct was an abuse of process. Secondly, if it was, the court has to exercise its discretion as to whether or not to strike out the claim.. It is at that second stage that the usual balancing exercise, and in particular considerations of proportionality, becomes relevant.”
“ (1) There must be conduct which occurs on at least two occasions, (2) which is targeted at the claimant, (3) which is calculated in an objective sense to cause alarm or distress, and (4) which is objectively judged to be oppressive and unacceptable. (5) What is oppressive and unacceptable may depend on the social or working context in which the conduct occurs. (6) A line is to be drawn between conduct which is unattractive and unreasonable, and conduct which has been described in various ways: “torment” of the victim, “of an order which would sustain criminal liability”.”