Across
Fine under hat, one invisible (6)
Brand magistrate crooked after waiving of charge (6)
See 19
Birdsong, perhaps, in worst dungeon, by the sound of it? (4,6)
German slimmer (6)
US politician in priest turned rotten (8)
Champ leaves hirsute character (9)
18d
Those contraptions would judder as he worked aboard loco (11)
5d
One enjoying a drink eats nuts in season (10)
Dimmer student finally admitted to county town after pretty low grade (3,6)
Numbers coming up, split spoils including deposit (8)
Foreign helper in middle of room, might you say? (2,4)
Measure girl, OK after reviewing contrary novel (10)
Book search in Birmingham? (4)
Work out the other royal title (6)
Behind schoolmaster, necking drinks (6)
Down
European vegetable's ending in Cornish pasty, possibly? (7)
Tool securing unloaded device behind washer (5)
Country in deceit more fuelled by alcohol, reportedly? (7)
See 16 across
Medicine served up in prison, one in disastrous campaign (9)
Round rings, circle left in region on base of nipple (7)
What man in essence and woman in effect both have proverbially to solve the problem immediately? (1,6,2,4)
Result of pat on baby's back, turn remarkably soppy (9)
Cryptic was like exercise for setter, say? (7)
See 15
9a
Small potatoes or peanuts, nibbles for hen party? (11)
Enter king, say, carrying head of Republican (6)
Seed perhaps mine, though not a tree, ultimately (5)
Type letters or click words in the clue