1: A hint for the snooker champ? (3)
 3: Oscillating crystal perhaps not so rare (9)
 8: Everlasting variety for Peter and Paul (9)
 10: Short time for the Irish (5)
 12: Polygraph unexpectedly traps vandal (3)
 13: In the act an organ is brought forth (9)
 15: Retro gents in exotic parks (5)
 16: Model spoken about is reserved (5)
 17: One fowl and yet two foul (9)
 18: Frost to cover the cake (3)
 19: Polyamide used by many Londoners (5)
 20: Englishman opening a can to dine at home (3,2)
 22: Strait men may be strict disciplinarians (9)
 24: Corpse apt to turn up in science fiction (5)
 26: Uncommon fly on rare plant (5,4)
 27: Arcking shot from Bill O'Brien (3)