Coffee Break Cryptic

23 March

Across

1 Diamonds seen by river in partial darkness (4)
3 Colliery boss in a Somerset town (8)
9 Starved in order to get publicity (7)
10 Jeremy the actor performs pressing work (5)
11 Poets start drinking in pubs (5)
12 Curt is moving from the country (6)
14 Copper prohibits islanders (6)
16 Flag seen when queen is captured by bishop and rook (6)
19 Shake a container for arrows (6)
21 Clothing provided initially by social workers (5)
24 Foreign articles below (5)
25 Please do arithmetic in valley (7)
26 It may be deadlier off the tracks (8)
27 Stains on top of dress? That's right! (4)

Down

1 Recoil from disadvantage (8)
2 Pole always cut off (5)
4 One nurse forced to seek cover (6)
5 Torn veils are bad things (5)
6 Feeling poorly, omit one (7)
7 Run - (4)
8 Quietly Ron is taken off to jail (6)
13 Journalists accepting ten varied gifts (8)
15 He's no gentleman, perhaps, unrobed (7)
17 A soft-fruit show (6)
18 Scoundrel going after black shoe (6)
20 Opera-lover did hold opera composer (5)
22 An Enid Blyton character would appear strange in New York (5)
23 Regretted sounding coarse (4)