1. An underground railway (6)
4. They always get their man (8)
10. Villain (9)
11. Ultra (5)
12. Cloth from flax (5)
13. Assessment (9)
14. Tuft (7)
16. Placard (4)
19. A type of hair style (4)
21. Rich (7)
24. A woman's "change of life" (9)
25. Odd-numbered page (5)
26. Sixty-seven in Roman numerals (5)
27. Include in scope (9)
28. Representative (8)
29. Androids (6)
Down
1. Feign (8)
2. Commercial undertaking (8)
3. Moses' brother (5)
5. Bottom-living cephalopod (7)
6. Longing for something past (9)
7. Mischievous (6)
8. To a great degree (6)
9. Having a woven pattern (6)
15. Children (9)
17. Composed of disconnected parts or sounds (8)
18. A sketchy summary (8)
20. Luxurious (7)
21. In Britain, it's called a spanner (6)
22. Grinned (6)
23. Whine (6)
25. Juliet's beau (5)