2 and 3 both appear to have trifoliate crowns and read CIVITAS CANTOR for Canterbury on the reverse, both Edward I. Difficult to be sure about 4, lacking detail, may be bifoliate and is of London, probably Edward II .
Number 1 has me stumped, no access to books at the moment, reverse legend seems to start with a Lombardic ‘N’ , ‘NAM’ or RAM’ and ends with an ‘S’. Could it be a continental imitation of Edward III?
Thats as much as I can offer while grandchild sitting.
Jerry