10 . In the next place it must be borne in mind that there is no rule, with regard to certiorari as there is with mandamus, that it will lie only where there is no other equally effective remedy. It is well established that, provided the requisite grounds exist, certiorari will lie although a right of appeal has been conferred by statute, (Halsbury's Laws of England, 3rd Ed., Vol. 11, p. 130 and the cases cited there). The fact that the aggrieved party has another and adequate remedy may be taken into consideration by the superior court in arriving at a conclusion as to whether it should, in exercise of its discretion, issue a writ of certiorari to quash the proceedings and decisions of inferior courts subordinate to it and ordinarily the superior court will decline to interfere until the aggrieved party has exhausted his other statutory remedies, if any. But this rule requiring the exhaustion of statutory remedies before the writ will be granted is a rule of policy, convenience and discretion rather than a rule of law and instances are numerous where a writ of certiorari has been issued in spite of the fact that the aggrieved party had other adequate legal remedies. In the King v. Postmaster General Ex parte Car-michael, (1928) 1 KB 291, a certiorari was issued although the aggrieved party had an alternative remedy by way of appeal. It has been held that the superior court will readily issue a certiorari in a case where there has been a denial of natural justice before a court of summary jurisdiction. The case of Rex v.Wadsworth Justices Ex parte Read, (1942) 1 KB 281 is an authority in point. In that case a man had been convicted in a court of summary jurisdiction without giving him an opportunity of being heard. It was held that his remedy was not by a case stated or by an appeal before the quarter sessions but by application to the High Court for an order of certiorari to remove and quash the conviction. At page 284 Viscount Caldecote C.J. observed:
