I was involved in drafting some model dispute resolution clauses for IPOS Mediation. These are for use when it is agreed that future disputes to be referred to mediation. They are intended for use in commercial contracts in the United Kingdom and internationally.
Alternative clauses for referral to litigation or arbitration are included, in the event that mediation does not result in settlement of the dispute. The choice of applicable law and the choice between litigation or arbitration are left blank for parties to decide for themselves when drafting the underlying agreement.
The clauses can be viewed here.