1: Nice work - point out the beginning (9)
5: Gloomy semi-dull firmament (5)
8: Lawman inside fires back, hits female (7)
9: Curious, one bowl holds heroin for compensation (5-2)
11: Movie star kind of hot for date (7)
12: Winning over the heart of quirky scatterbrain (7)
14: Rode with colleagues and complained about John's return (9)
15: Discounting all odds, teen assured to succeed (5)
16: Stu undressed in front of every tutor (5)
18: Nunn completes more circuits than Gore coming around Canary Island seaport (3,6)
20: In secrecy, cleverly adapt to new function (7)
21: Clannish discourtesy cut short a Radical (7)
22: Top of sports car the French painted on time is deep red (7)
23: Indulge artfully in dodging (7)
24: Multiplied by inaccurate items (5)
25: Uncommon fly on rare plant (5,4)