8 Shanghai airline comes over channel (6)
9 Leave a drop of alcohol in gnarled horn cup (2-6)
10 Heard of Ancient Greek currency (4)
11 Guards required after sulphur’s found in grain ovens (4-6)
12 Heartless sister gate-crashes top party (3,5)
13 Communicate worry about oddly missing kinsmen (6)
15 Island adopts English language (7)
17 Navigate a group of drivers back to convoy (7)
20 Pester WWII hero to welcome German (6)
22 Key state vote’s cut by half - hit the roof (8)
24 Soprano’s wearing sort of light blue concoction (5,5)
26 Excellent group's right for conservative (4)
27 Exceptional cooked pilau rice I devoured (8)
28 Award Romeo supported by another Shakespearean character (6)