1: Perfect counter-spy equipment (3)
3: Its a firm, small lettuce (3)
5: Boys terse brief for pearl producers (7)
9: Like a high ranking diplomat's awful ambrosia salad (13)
10: After Burton, the wild part of a person turns meek (5)
11: Carries most of sea-bird back. (3)
12: Execute knitters for pitchers (5)
13: Irregular bouts of activity suit beach scrubbers (4,3,6)
17: Tint bark clogs to provide foot support (8,5)
18: Work out how first Spanish olive was pitted. (5)
20: Crook skimmed cash register? (3)
22: Knew a radical in stir (5)
24: Cheaper oil, gas distributed in Island chains (13)
25: Thrash Elia a second time (7)
26: Requires five kills, or a single accurate shot. (3)
27: Hear Native American appeal (3)