Across
Mark is badly shamed (2,4)
Show disapproval at exam covering one lesson (8)
Female icon occasionally backed fossil fuel producer (3,3)
Sin party? (8)
Horse-racing daughter dumping a mad scientist (11)
Settled by itself (7)
See 24 Down
12's 29 maybe wanted thus? (4,2,5)
A relative of Juliet gets company for movie in seaside resort (8)
Bash Companion in Reserves, resulting in controversial headline (6)
Dreadful crimes to chill event (3,5)
Savage endless dance includes mating display (6)
Down
Take back band found inside topless gown (9)
Mike's confused over love for indigenous North American? (6)
Carpet lifted by university teacher (4)
No sure winner accepted after hollow Calypso performance (8)
Board aircraft, your Majesty, but don't carry drug! (5)
Key indicator rising (3)
One upset teacher means to cut pupil down to size! (4)
Female elephant's heading north for watery place (3)
Drag prince wearing uniform? On the contrary (4)
State excerpt from Lenin diaries (5)
Gunpowder plotter to show the way: nothing substitutes for explosives at first (5)
Meeting places for Oxford college intake - beginners (4)
As a rule, Yankee supports Confederate expelling English more than once (9)
I dropped out of bus ride to ruined sections of fort (8)
You dingbat - covering up a 'pair'! (3)
God, calm down Brian, ignore the odds! (4-2)
20a
(and 20 Across) Tritium, for instance: does it pair with two Oxygens, somehow? (12)
Snake - not Early European - could be Mexican? (4)
Crop my name! (4)
Scourge of outdated hospital equipment (3)
Type letters or click words in the clue