8 Cancel or reverse an action (4)
9 Investigator (10)
10 If you would? (6)
11 Plane (8)
12 Tangelo (4)
13 Discord (10)
17 Assist (4)
18 Home (5)
19 Sacs (4)
20 Plastic wrap (10)
22 Hurries on foot (4)
23 Cuddles (8)
27 Hysteria (6)
28 Agitated (10)
29 Nobleman (4)
Down
1 Disqualified (10)
2 Singer (8)
3 Comradeship (10)
4 Largest continent (4)
5 Reasonable (4)
6 Flew too close to the sun (Greek mythology) (6)
7 Coral island (4)
14 Steam bath (5)
15 11 times (10)
16 Arrangers (10)
19 Adjoined (8)
21 An official emissary (6)
24 Negatives (4)
25 A titled peer (4)
26 Religious splinter group (4)