1: Hope and Crosby going up and down (7)
4: Sausages from a Greek island (7)
8: Support a deranged original (11)
10: Now Elton heard California's big one (3)
11: Neither partner finds way out of country (3)
13: As one lacking a vice (5)
15: Slight urge at night (5)
16: Tossing and turning, I wondered what the comforter might be made of (9)
17: Renowned architect leaving island for long jog (5)
18: Smithys workplace agreement not originally despicable, not totally! (5)
19: Don't obstruct slippery eel packer (4,5)
20: Concrete well cover (5)
22: Strap, though short, has hanger's heart (5)
23: I am reported to leer (3)
24: Height is equal to three-fifths of the first one (3)
25: Just grazed the pasty? (4-7)
28: Having red nose, turned back (7)
29: He wrote about life in the woods. You read mostly inside (7)