“(a) The parties’ conduct and the reason for the delays; (b) The extent to which the consequences of the delays can be overcome before the trial; (c) The extent to which a fair trial may have been jeopardised by the delays; (d) Specific matters affecting the trial, such as illness of a critical witness and the like; (e) The consequences of an adjournment for the claimant, the defendant, and the court”