The jurisdiction and powers of all courts of summary jurisdiction, except in so far as the same may be altered or modified by any future Act shall remain as at the commencement of this Act and the district court shall, without prejudice to any other or wider powers conferred by statute, be entitled to exercise power on convicting of a common law offence—
(a)to award imprisonment for any period not exceeding 60 days;
(b)to impose a fine not exceeding £100 ;
(c)to ordain the accused (in lieu of or an addition to such imprisonment or fine) to find caution for good behaviour for any period not exceeding six months and to an amount not exceeding £100 ;
(d)failing payment of such fine or on failure to find such caution, to award imprisonment in accordance with section 407 of this Act :
Provided that in no case shall the total imprisonment exceed 60 days.