I think I've finished, but can't parse the last three.
18 down Dismissed uttered by heartless one in environs of veldt? (7)
VOETSAK or VOETSEK? V O(N)E T, but what about the second part?
24 down Crosses which are awarded for outstanding performance (4)
I think DSOs, but again I can't fully parse.
4 down One taking off supports around skip )5) C?P?R CAPER is skip, but the rest?
Thanks.