Solutions

ACROSS
1 Crossbowman.
CROSS+BOWMAN
9 On the ball.
ONT+HE+BALL (not anag.)
10 Exact.
EX+ACT
11 Manila.
MAN+IL+A
12 Delegate.
D+E+LEGATE
13 Lustre.
(anag.)
15 Priority.
PRIOR+IT+Y
18 Gunsmith.
(anag.)
19 Detest.
(hidden)
21 Restrain.
REST+RAIN (Iran anag.)
23 Gamble.
GAM(B+L)E
26 Ahern.
A+HER+N
27 Provident.
PROVIDE+NT
28 Earthenware.
(anag.)


DOWN
1 Clonmel.
C+L+ON+ME+L
2 Orton.
OR+TO+N
3 Steel drum.
(straight cryptic)
4 Oman.
OM+A+N
5 Mulberry.
M(U+L+B)ERRY
6 Niece.
NI(E)CE
7 Pottery.
POTT(ER)Y
8 Parasite.
PARAS+IT+E
14 Sinister.
S(I+N)ISTER
16 Operation.
(straight cryptic)
17 Stripper.
(straight cryptic)
18 Germane.
GERMAN+E
20 Theatre.
THE(ATR)E (art anag.)
22 Range.
RANGE(r)
24 Breda.
B+RED+A
25 Loch.
L+O+C+H