1: Does it take two groups at the pole to produce birds? (4,5)
6: English philosopher in rasher lot? (5)
9: Idea that is consuming Dell Crossword Puzzles, say (5)
10: Master William's title - or not? (7)
11: Waterhouses partner slashes discounts (5,4)
12: Backblock not all there (3)
13: Remove bombast from French painter? (5)
15: Of course, Alan truly is weird (9)
17: Had fun and took a risk in audition (9)
19: Fairy tale character concealed in simulated war front (5)
22: Copy of top ten missing (3)
23: I may fall into pit in a remote country (9)
25: Newspaper kid gets into music (7)
26: Ordered hoop to conserve mass and energy (5)
27: Sit on marsupials and rats tail (5)
28: Famous marshal perfects listening devices (9)