1.  2.  3.   g 4. 5.  6.  7.  8.
  g   g   g 9. g   g   g   g  
10.            g 11.   
  g   g   g   g   g   g   g  
12.        g 13.       
  g   g g g   g   g   g   g  
g 14.   15. g 16.         
17. g g g   g   g   g   g g g  
18.  19.        g 20.  21.   g
  g   g   g   g   g g g   g 22.
23.        g 24.  25.     
  g   g   g   g   g   g   g  
26.    g 27.           
  g   g   g   g   g   g   g  
28.         g 29.      

ACROSS

1. Workout without Queen for the Taxman. (6)

4. Helpful, I organise in big log. (8)

10. Tear let - oh no! - return of Monopoly killer! (4,2,5)

11. Standard talkback. (3)

12. Polish - a trick with threshhold. (7)

13. Take control of Ben's lavender patch. (7)

14. Leading man with boy back from accounts program. (1111)

16. Hurt, it fought at revenge. (3,3,3)

18. Superlative guy to lead a grandmother ... (3,6)

20. ... (super guy a right saint to start with!) (4)

23. Bag to back in crowd. (7)

24. For a great band, I'd be at Lennon's with no-no characters. (7)

26. Help from a band? (3)

27,9-Down,2-Down. Words of (24-Across). (3,2,3,3, 5,4,5, 3'1,3)

28. Identity reversal opens shows. (8)

29. Go at 10:50 (time's 10) ? (6)

DOWN

1. Senior, or about to reverse the blues. (6)

2. see 27-Across

3. Cuts passions to ice? (5)

5. Super-superlative, as (20-Across) heard to be to join (24-Across). (6,4,4)

6. (1-Down) of perception in AI substitution references. (9)

7. Build it around top man's plan - a pacemaker for instance. (7)

8. Strange build around top man - clogs hose for instance. (8)

9. see 27-Across

15. (Really nice if a tubule goes awry ... (9)

17. ... but one tissue trimming a help, so they reckon.) (2,2,4)

19. Shows normal helpers, with one missing. (7)

21. Exhausted solo about vulgar part. (3,4)

22. Dances about to get high. (6)

25. Largely a dish, yet DIY precluded (5)