AETNA INSURANCE COMPANY, A CORPORATION, APPELLANT,

v.

JOHN FRANKLIN JORDAN AND LOIS C. JORDAN, HIS WIFE, APPELLEES

WIGGINTON, Acting Chief Judge.

Plaintiffs (appellees) brought this suit on an insurance policy issued to him by the defendant-insurer (appellant) to recover the amount of a judgment procured by plaintiffs in a negligence action against one Harold G. Musgrove, an alleged uninsured motorist. Plaintiffs’ claim was based on what is commonly known as “uninsured motorist” coverage as provided by the insurance policy sued upon.

Motion of defendant to dismiss the complaint for failure to state a cause of action was denied. Defendant then filed an answer setting out two defenses: (1) that there was no coverage because plaintiffs, without written consent of defendant, prosecuted their claim to judgment against the uninsured motorist; and (2) that in any event, the policy required that the question of liability of the uninsured motorist and *409-the amount of damages should be determined by arbitration, which was not had in the premises, hence the defendant was not liable for the judgment obtained by plaintiffs against the uninsured motorist.

Defendant then moved for judgment on the pleadings and plaintiffs moved to strike •defendant’s said defenses and for a summary judgment. At this juncture the trial •court certified certain questions of law to this court, which we declined to answer.1

The trial court then entered an order striking defendant’s third defense based on the prosecution by plaintiffs of their claim to judgment against the uninsured motorist without written consent of defendant, with leave to defendant to amend. An amended third defense was filed which differed from the earlier only in that it undertook to set out prejudice to the defendant, which the lower court had held necessary to sustain said defense.

The defendant thereafter moved for a rehearing on its prior motion for judgment on the pleadings. The lower court, by the order appealed, found:

“ * * * that the arbitration clause contained in the policy of insurance involved herein is valid and this cause should be settled by arbitration; but, the ‘no suit’ clause contained in said policy of insurance is void as against public policy, and since the amended third defense does not show that by the suit the defendant was prejudiced in any manner, or that it suffered any injury or loss, the plaintiffs having offered in their complaint to assign said judgment to the defendant to the extent of any payments made by the defendant to the plaintiff it should be stricken; * *

and thereupon (1) granted said petition for rehearing; (2) held that: “The matter of the amount of damages to be paid by the defendant to the plaintiff shall be determined by arbitration, as demanded by the defendant”; (3) provided that: “The result of such arbitration shall be reported to this court”; and (4) struck defendant’s amended third defense.

A serious question has been raised with respect to whether the order appealed possesses the necessary attributes of finality sufficient to support this direct appeal under Rule 3, F.A.R., 31 F.S.A. In one aspect of the case, the order is final in nature in that it concludes the judicial labor of the trial court insofar as concerns the action at law laid in the complaint. Viewed in another aspect, the order may be considered interlocutory in nature in that the court purports to retain jurisdiction of the cause by requiring that the result of the arbitration be reported to it. In either event we are convinced, because of the reasons hereinafter set forth, that the order departs from the essential requirements of law and may reasonably cause material injury to appellant throughout the subsequent proceedings for which the remedy by appeal will not be adequate. Under the circumstances we treat the notice of appeal filed herein, and the record thereon, as a petition for certiorari duly presented in accordance with Rule 4.5(c), F.A.R.2

We first direct our attention to those provisions of the order appealed which find and conclude that the “no suit” clause contained in the insurance policy sued upon is void as a matter of public policy, and which strike from defendant’s answer the third defense which interposes the “no suit” clause as a bar to the action.

The validity of the standard “no suit” clause contained in the uninsured motorist