1: God! Get real! There's no point getting upset (3)
3: Watering devices found in run-down orange sheds (6, 5)
9: Fool gets share of standards in 25-down (13)
10: Infection leads from partly uncooked steak (3)
11: Bigoted, ideological extremes in preamble to bill are misguided (9)
12: Burial of radical author steeped in meaning (9)
14: Glint of silica in neat crystal (5)
15: Balance a plate of fish? (5)
17: Settle standard kilometer (4)
19: Collector is slow mover garnering southern selenium (9)
20: Backblock not all there (3)
23: Liquidation of one country led by pair of fools (13)
24: A Hollywood star upset about paparazzi hub in crude social event (6,5)
25: Bounder beheaded by slippery swimmer (3)