1: Venomous enemy lurks in Caspians (3)
3: Left with pal carrying new gold case (11)
8: Carol goes round Royal Botanic Gardens, taking an oblique course (7)
10: With reference to above -- Phys. Ed. Department has renewed contract (7)
12: Plenty supporting nuclear process (9)
13: Comic Viking bombs fish (5)
15: Severely criticize cook (5)
16: Archaeopterix? Maybe I err badly (5,4)
17: Edited schematic religious text (9)
21: Siphon windy painter? (5)
22: Notable piece of animation by English bishop (5)
23: I'm entering fancy residences with contractor's quotes (9)
25: A button on the microwave belongs to berets or fedoras, upon reflection (7)
27: Auto manufacturer meeting a lieutenant in 'The Ancient Mariner'? (3,4)
28: Bill board reflected family meal extra (5,6)
29: Club with space for some money (3)