Alternative Dispute Resolution (ADR) should not be treated as unreasonable where a refusal to mediate might in the circumstances have been justified.
In the recent Court of Appeal case of Gore v Naheed & Anor  EWCA Civ 369
Lord Justice Patten said:
“49. Mr McNae referred us to the decision of this Court in PGF II SA v OMFS Company 1 Ltd in which Briggs LJ emphasised the need, as he saw it, for the courts to encourage parties to embark on ADR in appropriate cases and said that silence in the face of an invitation to participate in ADR should, as a general rule, be treated as unreasonable regardless of whether a refusal to mediate might in the circumstances have been justified. Speaking for myself, I have some difficulty in accepting that the desire of a party to have his rights determined by a court of law in preference to mediation can be said to be unreasonable conduct particularly when, as here, those rights are ultimately vindicated. But, as Briggs LJ makes clear in his judgment, a failure to engage, even if unreasonable, does not automatically result in a costs penalty. It is simply a factor to be taken into account by the judge when exercising his costs discretion.
50. In this case the judge did take it into account but concluded that it was not unreasonable for Mr Gore to have declined to mediate. His solicitor considered that mediation had no realistic prospect of succeeding and would only add to the costs. The judge said that he considered that the case raised quite complex questions of law which made it unsuitable for mediation. His refusal to make an allowance on these grounds cannot in my view be said to be wrong in principle.”