No 12674, Wednesday 10 Jul 2019, Incognito

ACROSS
7   Greek god returns to canal (4) SUEZ<=
8   Gale? Good luck at the theatre! (5,1,3) BREAK A LEG {GALE}* [RA]
10 Cross swords with soldier in old city (6) SPARTA {SPAR}{TA}
11 The Iron Lady's threat is circulated around China (8) THATCHER {THAT{CH}ER*}

12 Sentry dispatched by elevated railway (8) SENTINEL {SENT IN}{EL}
14 Boy! Steroids contain an aphrodisiac (6) OYSTER [T]
16 Rushed back before tailless mammal gets creature (7) NARWHAL {RAN<=}{WHALe}

18 Vera dances at state society's parties (4-3) RAVE-UPS {VERA*}{UP}{S}
21 Dog? Me? (6) SETTER [DD]
23 Last performance produced by Wang's son? (4,4) SWAN SONG*
25 Act! O rat! (8) TURNCOAT {ACT+O}* [RA]
27 Queen has a short garment and a heavenly body (6) QUASAR {QU}{A}{SARi}
29 One follows greenest rolling national park in Tanzania (9) SERENGETI {GREENEST*}{1}
30 Girl's love for prison (4) GAOL {GA{0}L}

DOWN
1   Call to witness a bus going back carrying violent peon (8) SUBPOENA {A BUS<=} over {PEON*}
2   Monarch's class of security in vehicle (4) CZAR {C{Z}AR}
3   Get no bait prepared (6) OBTAIN*
4   Salesman wearing hat is a cold blooded creature (7) REPTILE {REP}{TILE}
5   OK, agree Alamo was built around end of March (8) OKLAHOMA {OK}{LA{m..cH}OMA*}
6   Oppose group of nations in absence of king (4) BLOC BLOCk Definition in the middle!
9   Wandering refugees give up fur to get birds (5) GEESE rEfuGEES*
13 That's to say: "Pull that thing" (2,3) TO WIT {TOW}{IT}
15 Stalks English girl behind empty supermarket (5) STEMS {Su...eT}{E}{MS}
17 Are robins endlessly flying aloft? (8) AIRBORNE {ARE+ROBINs}*
19 Perhaps Gen. Patton has no time for his high command (8) PENTAGON {GEN+PATtON}*
20 Since three are circling Yggdrasil, for example (3,4) ASH TREE {AS}{THREE*}
22 European folding suitcases (5) ETUIS {E}{SUIT*}
24 Leave after accountant and pronounce "Not guilty" (6) ACQUIT {AC}{QUIT}
26 One's wrong about king or emperor blamed for fiddling (4) NERO {NE{R}O*}
28 Legendary boat in Miramar, Goa (4) ARGO [T]

Reference List
Soldier = TA(Territorial Army), Elevated Railway = EL, Society = S, Queen = QU, Love = 0, King = K,R, English = E, Girl = Ms, Time = T, European = E, Accountant = AC

GRID