1: Got excited by unusual tulip (3,2)
4: Infringement due to instrument on tabletop precedes charge (9)
9: Swamp creature resting tail on a rocky outcrop (5)
10: Almost useless nags (7)
11: Where nurses work progressively (7)
13: 'The head of administration is in debt,' Ed argued (7)
14: Short bloke quietly escaped seaweed (3)
15: A Hollywood star upset about paparazzi hub in crude social event (6,5)
18: Barque, for one, is a trio-tutor (5-6)
21: In favor of echoing game call (3)
23: Indulgent Russian premier hosts English Tory's leader (7)
26: Before university, leap at rocky mesa (7)
27: Midwestern city lost its soul (2,5)
28: Frost over mid-January during epic exploit (3,2)
30: Pluto is cold and tired out; its a disgrace (9)
31: Interest in a revolutionary activist's broadcast (5)