these clues are probably 4 letters but may be 5 or 6
25. Regional win provided by stunted Olympian - starts with G or H
10. Long ago schoolmaster gets gold for second half - starts with B
35. A boring cricketer Hutton is low grade - starts K,L or M ... possibly something to do with LEN (hutton) ??
60. Correct facts failing to start floppy growth - starts U,V,W,X,Y or Z